| Article | Signals | Class | Rule |
| C space | S1,S4,S8,S9 | Stub | strong |
| C*-algebra | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| C+-probability | S2,S6 | Stub | strong |
| C-36 (cipher machine) | S2 | Start | strong |
| C-52 (cipher machine) | S2 | Start | strong |
| C-chart | S1,S2 | Start | strong |
| C-group | S1,S6 | Start | strong |
| C-minimal theory | S1,S6,S8 | Stub | strong |
| C-normal subgroup | S1,S6 | Stub | strong |
| C-number | S3,S6,S9 | Stub | S6 near |
| C-theorem | S3,S4,S5,S6,S8 | Start | strong |
| C-Thru Ruler | S6 | | S6 near |
| C. I. Lewis | S2,S8,S9 | C | strong |
| C. J. Eliezer | S1,S3 | C | strong |
| C. J. F. Williams | S2 | Start | strong |
| C. L. E. Moore instructor | S1,S9 | Start | strong |
| C. L. Lehmus | S1,S9 | Stub | strong |
| C. Louis Kincannon | S2 | Stub | strong |
| C. P. Ramanujam | S1,S8,S9 | Start | strong |
| C. R. Rao | S2,S5,S8,S9 | C | strong |
| C. Robin Graham | S1,S9 | Stub | strong |
| C. S. Seshadri | S1,S8,S9 | Start | strong |
| C. S. Venkataraman | S1 | Stub | strong |
| C. S. Yogananda | S1 | Start | strong |
| C. T. C. Wall | S1,S8,S9 | C | strong |
| C. T. K. Chari | S2,S3 | Start | strong |
| C. V. Mourey | S1 | Stub | strong |
| C. William Gear | S1 | Start | strong |
| C0-semigroup | S1,S4,S6,S8,S9 | Start | strong |
| C2Net | S2 | Stub | strong |
| CA-group | S1,S6 | Start | strong |
| Cabal (set theory) | S1,S6,S8,S9 | Stub | strong |
| Cabibbo–Kobayashi–Maskawa matrix | S3,S6,S9 | B | S6 near |
| Cabiria Andreian Cazacu | S1,S8,S9 | Start | strong |
| Cable theory | S4 | | strong |
| CableCARD | S2 | B | strong |
| Cabtaxi number | S1,S5,S6,S9 | Stub | strong |
| Caccioppoli Prize | S1,S9 | Stub | strong |
| Caccioppoli set | S1,S4,S5,S6,S9 | Start | strong |
| CAcert.org | S2 | Start | strong |
| Cactus graph | S1,S5,S6,S8 | Start | strong |
| Cadambathur Tiruvenkatacharlu Rajagopal | S1,S8,S9 | Stub | strong |
| Caesar cipher | S2,S5,S6,S8,S9 | FA | strong |
| CAESAR Competition | S2,S6 | Start | strong |
| Cage (graph theory) | S1,S5,S6,S8 | Start | strong |
| Cagniard–De Hoop method | S1,S4,S6 | Stub | strong |
| Cahen's constant | S5,S6,S8,S9 | | S6 near |
| Cahn–Hilliard equation | S3,S4,S5,S6,S8,S9 | Start | strong |
| Cairo pentagonal tiling | S1,S5,S6,S8 | GA | strong |
| Caitlin Buck | S2,S8 | Stub | strong |
| Caius Iacob | S1 | Start | strong |
| Cake number | S1,S5,S6,S9 | Start | strong |
| Calabi conjecture | S1,S4,S5,S6,S8,S9 | Start | strong |
| Calabi flow | S1,S3,S4,S6,S8,S9 | Start | strong |
| Calabi triangle | S1,S5,S9 | Start | strong |
| Calabi–Eckmann manifold | S1,S4,S5,S9 | Stub | strong |
| Calabi–Yau manifold | S1,S3,S4,S5,S6,S8,S9 | Start | strong |
| Calcpad | S1,S8,S9 | Start | strong |
| Calculation | S1,S6,S8 | Start | strong |
| Calculator | S1,S6,S8,S9 | C | strong |
| Calculator input methods | S1,S6,S9 | C | strong |
| Calculus | S1,S5,S6,S8,S9 | C | strong |
| Calculus (Apostol books) | S1,S6,S9 | C | strong |
| Calculus Made Easy | S1,S6,S8,S9 | Stub | strong |
| Calculus of constructions | S1,S4,S5,S6,S8,S9 | Start | strong |
| Calculus of functors | S1,S6,S8,S9 | Start | strong |
| Calculus of moving surfaces | S1,S6,S8 | Start | strong |
| Calculus of predispositions | S1,S2,S6 | Start | strong |
| Calculus of structures | S2,S6,S9 | C | strong |
| Calculus of variations | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Calculus on Euclidean space | S1,S6,S8,S9 | C | strong |
| Calculus on finite weighted graphs | S1,S6,S9 | Start | strong |
| Calculus on Manifolds (book) | S1,S5,S6,S9 | Stub | strong |
| Calculus ratiocinator | S1,S2,S5,S8,S9 | Start | strong |
| Calderón projector | S4,S6 | | strong |
| Calderón–Zygmund lemma | S1,S4,S5,S6,S8,S9 | Start | strong |
| Caleb Andrew Stewart | S1 | Stub | strong |
| Caliber (mathematics) | S1,S5,S6 | Stub | strong |
| Calibrated geometry | S1,S5,S6,S8,S9 | Start | strong |
| Calibrated probability assessment | S1,S2,S6 | Start | strong |
| Calibration (statistics) | S1,S2,S5,S6,S9 | Start | strong |
| Calkin algebra | S1,S4,S5,S6,S8,S9 | Start | strong |
| Calkin correspondence | S1,S5,S6,S9 | Start | strong |
| Calkin–Wilf tree | S1,S5,S6,S8,S9 | B | strong |
| Callan–Symanzik equation | S3,S4,S5,S6 | C | strong |
| Callendar–Van Dusen equation | S3,S5,S6 | Stub | S6 near |
| Calogero conjecture | S3,S6 | Start | S6 near |
| Calogero–Degasperis–Fokas equation | S1,S5 | Stub | strong |
| Calogero–Moser–Sutherland model | S6 | | S6 near |
| Caloric polynomial | S1,S5,S6,S8 | Stub | strong |
| Camassa–Holm equation | S3,S4,S8,S9 | C | strong |
| Camellia (cipher) | S1,S2,S5,S8 | B | strong |
| Cameron Gordon (mathematician) | S1,S8,S9 | Stub | strong |
| Cameron graph | S1,S5,S6,S8,S9 | Stub | strong |
| Cameron Leigh Stewart | S1,S6,S8,S9 | Start | strong |
| Cameron–Erdős conjecture | S1,S5,S6,S8,S9 | Stub | strong |
| Cameron–Martin theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cami Sawyer | S1 | Start | strong |
| Camille Jordan | S1,S5,S8,S9 | Start | strong |
| Camille McKayle | S1 | C | strong |
| Camille-Christophe Gerono | S1 | Stub | strong |
| Camillo De Lellis | S1,S8,S9 | Start | strong |
| Campanus of Novara | S1,S8,S9 | C | strong |
| Campbell's theorem (geometry) | S1,S5,S6 | Start | strong |
| Campbell's theorem (probability) | S1,S5,S6,S9 | C | strong |
| Campedelli surface | S1,S8,S9 | Stub | strong |
| Canada/USA Mathcamp | S1,S6,S9 | Start | strong |
| Canadian Census of Agriculture | S2 | C | strong |
| Canadian Mathematical Society | S1,S8,S9 | | strong |
| Canadian Society for History and Philosophy of Mathematics | S1,S6 | Stub | strong |
| Canadian traveller problem | S1,S3,S6,S8,S9 | Start | strong |
| Canberra distance | S1,S5,S6 | Stub | strong |
| Cancellation property | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cancellative semigroup | S1,S6,S9 | C | strong |
| Cancelling out | S1,S6,S9 | Start | strong |
| Cancer cluster | S2 | Start | strong |
| Candido's identity | S1,S6 | Start | strong |
| Candlestick chart | S2 | Start | strong |
| Cannon's algorithm | S1,S5,S6,S8 | Stub | strong |
| Cannonball problem | S1,S5,S6,S9 | C | strong |
| Cannon–Thurston map | S1,S6,S9 | Start | strong |
| Canon arithmeticus | S1,S6 | Start | strong |
| Canon Palmtronic LE-80M | S1 | Stub | strong |
| Canon Sinuum (Bürgi) | S1,S6,S8,S9 | Stub | strong |
| Canonical analysis | S2,S6 | Start | strong |
| Canonical basis | S1,S6,S9 | B | strong |
| Canonical bundle | S1,S4,S5,S6,S8,S9 | C | strong |
| Canonical commutation relation | S3,S4,S5,S6,S8,S9 | Start | strong |
| Canonical coordinates | S3,S4,S5,S6,S9 | Start | strong |
| Canonical correlation | S1,S2,S4,S8 | Start | strong |
| Canonical correspondence analysis | S1 | Stub | strong |
| Canonical ensemble | S3,S4,S8,S9 | Start | strong |
| Canonical form | S1,S2,S5,S6,S8,S9 | C | strong |
| Canonical Huffman code | S1,S3,S5,S6 | C | strong |
| Canonical map | S1,S6,S8,S9 | Stub | strong |
| Canonical normal form | S1,S2,S6,S8,S9 | C | strong |
| Canonical quantization | S3,S4,S5,S6,S9 | C | strong |
| Canonical ring | S1,S5,S6,S8,S9 | Start | strong |
| Canonical singularity | S1,S6,S8,S9 | B | strong |
| Canonical transformation | S3,S4,S5,S6 | B | strong |
| Canonizant | S1,S6,S8,S9 | Stub | strong |
| Canopy clustering algorithm | S2,S5 | Start | strong |
| Cantellated 120-cell | S1,S5,S8,S9 | Stub | strong |
| Cantellated 24-cell honeycomb | S1,S5,S6,S9 | Start | strong |
| Cantellated 24-cells | S1,S5,S8,S9 | Stub | strong |
| Cantellated 5-cell | S1,S5,S8,S9 | Start | strong |
| Cantellated 5-cubes | S1,S5,S8,S9 | C | strong |
| Cantellated 5-orthoplexes | S1,S5,S8,S9 | C | strong |
| Cantellated 5-simplexes | S1,S5,S8,S9 | Start | strong |
| Cantellated tesseract | S1,S5,S6,S8,S9 | Start | strong |
| Cantellated tesseractic honeycomb | S1,S5,S6,S9 | Stub | strong |
| Cantellation (geometry) | S1,S5,S8,S9 | Start | strong |
| Cantelli's inequality | S1,S5,S6,S8 | Start | strong |
| Cantic 5-cube | S1,S5,S8,S9 | Redirect | strong |
| Cantic 6-cube | S1,S5,S8,S9 | Redirect | strong |
| Cantic octagonal tiling | S1,S6,S8,S9 | Stub | strong |
| Cantic order-4 hexagonal tiling | S1,S6,S8,S9 | Stub | strong |
| Cantitruncated 24-cell honeycomb | S1,S5,S6,S9 | Start | strong |
| Cantitruncated tesseractic honeycomb | S1,S5,S6,S9 | Start | strong |
| Cantor | S4 | | strong |
| Cantor algebra | S1,S4,S6,S9 | Stub | strong |
| Cantor cube | S1,S5,S6,S8,S9 | Start | strong |
| Cantor distribution | S1,S2,S8 | Start | strong |
| Cantor function | S1,S3,S4,S5,S6,S9 | Start | strong |
| Cantor Medal | S1,S9 | Stub | strong |
| Cantor set | S1,S3,S4,S5,S6,S8,S9 | C | strong |
| Cantor space | S1,S4,S5,S6,S8,S9 | C | strong |
| Cantor tree | S1,S6,S8,S9 | Stub | strong |
| Cantor tree surface | S1,S6,S8,S9 | Stub | strong |
| Cantor's diagonal argument | S1,S5,S6,S8,S9 | B | strong |
| Cantor's first set theory article | S1,S6,S8,S9 | GA | strong |
| Cantor's intersection theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cantor's isomorphism theorem | S1,S5,S6,S8,S9 | GA | strong |
| Cantor's paradox | S1,S5,S6,S8,S9 | B | strong |
| Cantor's theorem | S1,S5,S6,S8,S9 | B | strong |
| Cantor–Bernstein theorem | S1,S5,S6,S8 | Stub | strong |
| Cantor–Dedekind axiom | S1,S5,S6,S8,S9 | Stub | strong |
| Cantor–Zassenhaus algorithm | S1,S3,S5,S6,S9 | Start | strong |
| Cap product | S1,S4,S5,S6,S9 | Start | strong |
| Cap set | S1,S4,S5,S6,S8 | B | strong |
| Capable group | S1,S6,S8 | Stub | strong |
| Capacitance | S3,S4,S5,S8 | C | strong |
| Capacitated arc routing problem | S6 | | S6 near |
| Capacitated minimum spanning tree | S1,S6,S8 | Start | strong |
| Capacity of a set | S1,S3,S4,S5,S6,S8 | Start | strong |
| Capacity optimization | S2,S3 | Stub | strong |
| Capelli's identity | S1,S5,S6,S9 | C | strong |
| CAPICOM | S2 | Stub | strong |
| Capillary wave | S3,S4 | C | strong |
| Capital asset pricing model | S4,S6 | | strong |
| Capped grope | S1,S5,S6 | Stub | strong |
| Capstone (cryptography) | S2,S6 | Stub | strong |
| Capsule (geometry) | S1,S6 | Stub | strong |
| Caputo fractional derivative | S1,S4,S6,S9 | Start | strong |
| Caratheodory-π solution | S1,S6 | C | strong |
| Carathéodory conjecture | S1,S5,S6,S8,S9 | Start | strong |
| Carathéodory function | S1,S5,S6,S9 | Start | strong |
| Carathéodory kernel theorem | S1,S5,S6,S9 | Start | strong |
| Carathéodory metric | S1,S4,S5,S6,S9 | Start | strong |
| Carathéodory's criterion | S1,S5,S6,S8,S9 | Stub | strong |
| Carathéodory's existence theorem | S1,S5,S6,S8,S9 | Start | strong |
| Carathéodory's extension theorem | S1,S5,S6,S8,S9 | Start | strong |
| Carathéodory's theorem (conformal mapping) | S1,S5,S6,S8,S9 | Start | strong |
| Carathéodory's theorem (convex hull) | S1,S5,S6,S8,S9 | C | strong |
| Carathéodory–Jacobi–Lie theorem | S1,S5,S6,S8,S9 | Stub | strong |
| Card catalog (cryptology) | S2,S6 | Start | strong |
| Card Verifiable Certificate | S2,S6 | Stub | strong |
| Cardan grille | S2,S6 | C | strong |
| Cardinal and Ordinal Numbers | S1,S6,S8,S9 | Start | strong |
| Cardinal characteristic of the continuum | S1,S4,S6,S9 | Start | strong |
| Cardinal function | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cardinal number | S1,S4,S5,S6,S8,S9 | B | strong |
| Cardinal point (optics) | S3,S4,S6,S9 | Start | strong |
| Cardinality | S1,S4,S5,S6,S8,S9 | GA | strong |
| Cardinality of the continuum | S1,S4,S5,S6,S8,S9 | B | strong |
| Cardioid | S1,S5,S8,S9 | C | strong |
| Cardy formula | S3,S4,S5 | Start | strong |
| Caren Diefenderfer | S1 | Start | strong |
| Carew Arthur Meredith | S1,S2,S5,S8 | Start | strong |
| Carina Curto | S1 | C | strong |
| Caristi fixed-point theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Carl A. Wiley | S1 | Start | strong |
| Carl Adam Petri | S1,S8,S9 | Start | strong |
| Carl Anton Bretschneider | S1,S9 | Start | strong |
| Carl B. Allendoerfer | S1,S8,S9 | Start | strong |
| Carl B. Allendoerfer Award | S1,S9 | C | strong |
| Carl Benjamin Boyer | S1,S8,S9 | B | strong |
| Carl Christoffer Georg Andræ | S1 | Start | strong |
| Carl D. Murray | S1 | Start | strong |
| Carl Ferdinand Degen | S1,S9 | Start | strong |
| Carl Friedrich Gauss | S1,S2,S3,S4,S5,S6,S8,S9 | GA | strong |
| Carl Friedrich Geiser | S1,S9 | Start | strong |
| Carl Gottlieb Ehler | S1,S8 | Start | strong |
| Carl Gustav Axel Harnack | S1,S8,S9 | Start | strong |
| Carl Gustav Jacob Jacobi | S1,S5,S8,S9 | C | strong |
| Carl Günther Ludovici | S2 | C | strong |
| Carl Hierholzer | S1 | Start | strong |
| Carl Hindenburg | S1,S6,S8,S9 | Start | strong |
| Carl Jensen Burrau | S1 | Stub | strong |
| Carl Jockusch | S1,S8,S9 | Stub | strong |
| Carl Jung | S4,S9 | | strong |
| Carl Kostka | S1 | Stub | strong |
| Carl Ludvig Godske | S1,S8 | Stub | strong |
| Carl Ludwig Siegel | S1,S5,S8,S9 | Start | strong |
| Carl M. Bender | S1,S3,S9 | Start | strong |
| Carl Nelson Gorman | S2 | C | strong |
| Carl Neumann | S1,S8,S9 | Start | strong |
| Carl Pomerance | S1,S8,S9 | Stub | strong |
| Carl Posy | S2 | Stub | strong |
| Carl R. de Boor | S1,S8,S9 | Start | strong |
| Carl Runge | S1,S3,S8,S9 | Start | strong |
| Carl S. Herz | S1,S9 | Start | strong |
| Carl Størmer | S1,S3,S8,S9 | GA | strong |
| Carl Theodor Anger | S1,S8 | Stub | strong |
| Carl Theodore Heisel | S6 | | S6 near |
| Carl Wilhelm Borchardt | S1,S8,S9 | Stub | strong |
| Carl Wolfgang Benjamin Goldschmidt | S1,S8,S9 | C | strong |
| Carl-Erik Quensel | S2 | Start | strong |
| Carl-Erik Sjöstedt | S1 | C | strong |
| Carl-Erik Särndal | S2,S8 | Start | strong |
| Carla Cotwright-Williams | S1,S6 | Start | strong |
| Carleman linearization | S1,S6,S9 | Start | strong |
| Carleman's condition | S1,S5,S6,S8,S9 | Start | strong |
| Carleman's equation | S1,S5,S6 | Start | strong |
| Carleman's inequality | S1,S5,S6,S8,S9 | Start | strong |
| Carleson | S4 | | strong |
| Carleson measure | S1,S4,S5,S6,S9 | Start | strong |
| Carleson's theorem | S1,S5,S8,S9 | B | strong |
| Carleson–Jacobs theorem | S1,S5,S6,S8 | Stub | strong |
| Carlisle Adams | S2,S8 | Stub | strong |
| Carlitz exponential | S1,S5,S6,S8,S9 | Start | strong |
| Carlitz–Wan conjecture | S1,S5,S6,S8,S9 | Stub | strong |
| Carlo Alberto Castigliano | S1,S3,S8 | Stub | strong |
| Carlo Catassi | S2 | Start | strong |
| Carlo Cattaneo (mathematician) | S1,S3,S8,S9 | Start | strong |
| Carlo Emilio Bonferroni | S1,S2,S8,S9 | Stub | strong |
| Carlo Ignazio Giulio | S1 | Stub | strong |
| Carlo Miranda | S1,S8,S9 | Start | strong |
| Carlo Rinaldini | S1 | C | strong |
| Carlo Rosati | S1 | Stub | strong |
| Carlo Severini | S1,S8,S9 | C | strong |
| Carlos Alberto Barbosa Dantas | S2 | Stub | strong |
| Carlos Alberto de Bragança Pereira | S2 | C | strong |
| Carlos Benjamin de Lyra | S1 | C | strong |
| Carlos Castillo-Chavez | S1,S8,S9 | C | strong |
| Carlos Graef Fernández | S1,S3 | Start | strong |
| Carlos Gustavo Moreira | S1,S8,S9 | Stub | strong |
| Carlos Kenig | S1,S8,S9 | Stub | strong |
| Carlson symmetric form | S1,S4,S5,S6,S8,S9 | C | strong |
| Carlson's theorem | S1,S5,S6,S8,S9 | Start | strong |
| Carlton E. Lemke | S1,S9 | Start | strong |
| Carlyle circle | S1,S5,S6,S8,S9 | Start | strong |
| Carmela Troncoso | S2,S3 | C | strong |
| Carmen Batanero | S2 | Stub | strong |
| Carmen L. Rivera-Medina | S2,S6 | Start | strong |
| Carmichael function | S1,S5,S6,S8,S9 | C | strong |
| Carmichael number | S1,S4,S5,S6,S8,S9 | C | strong |
| Carmichael's theorem | S1,S5,S6,S8,S9 | Start | strong |
| Carmichael's totient function conjecture | S1,S5,S6,S8,S9 | C | strong |
| Carnap Papers | S2 | Start | strong |
| Carnelian | S4 | | strong |
| Carnot cycle | S3,S4 | B | strong |
| Carnot group | S1,S9 | Stub | strong |
| Carnot's theorem (conics) | S1,S5,S8 | Start | strong |
| Carnot's theorem (inradius, circumradius) | S1,S5,S8,S9 | Stub | strong |
| Carnot's theorem (perpendiculars) | S1,S5,S8 | Start | strong |
| Carol A. Gotway Crawford | S1,S2,S8,S9 | Start | strong |
| Carol Alexander | S1 | Start | strong |
| Carol House | S2,S8 | Stub | strong |
| Carol Joyce Blumberg | S2,S8 | Start | strong |
| Carol K. Redmond | S2,S8 | Start | strong |
| Carol Karp | S1,S9 | Start | strong |
| Carol S. Carson | S2,S8 | Start | strong |
| Carol S. Woodward | S1 | Start | strong |
| Carol Schumacher | S1,S9 | Start | strong |
| Carol Walker | S1 | Start | strong |
| Carol Wood | S1,S8,S9 | Start | strong |
| Carole Lacampagne | S1 | Start | strong |
| Carolina Araujo (mathematician) | S1,S8,S9 | Start | strong |
| Carolina Benedetti | S1 | Start | strong |
| Caroline Colijn | S1 | C | strong |
| Caroline Finch | S1,S2 | C | strong |
| Caroline Klivans | S1,S9 | Start | strong |
| Caroline Series | S1,S8,S9 | C | strong |
| Caroline Uhler | S2 | Start | strong |
| Carolyn Eisele | S1,S9 | C | strong |
| Carolyn Morgan | S2,S8 | Start | strong |
| Carolyn S. Gordon | S1,S8,S9 | B | strong |
| Carolyn Yackel | S1,S9 | Start | strong |
| Carothers equation | S5,S6 | | S6 near |
| Carotid–Kundalini function | S1,S5,S6 | Start | strong |
| Carpenter's rule problem | S1,S5,S6,S9 | Start | strong |
| Carpet plot | S1,S2 | Start | strong |
| Carpus of Antioch | S1,S8,S9 | Stub | strong |
| Carrie Diaz Eaton | S1 | Start | strong |
| Carrie Ichikawa Jenkins | S2 | Start | strong |
| Carroll diagram | S1,S6,S9 | Stub | strong |
| Carry (arithmetic) | S1,S5,S6 | Start | strong |
| Carry operator | S1,S6 | Stub | strong |
| Carry-less product | S1,S6 | Start | strong |
| Carrying capacity | S2,S4,S9 | C | strong |
| Carryover effect | S2 | Stub | strong |
| Carré du champ operator | S1,S6 | Start | strong |
| Carr–Madan formula | S1,S6,S9 | Stub | strong |
| Carsten Niebuhr | S1,S8 | Start | strong |
| Carsten Thomassen (mathematician) | S1,S5,S8,S9 | Stub | strong |
| Cartan connection | S1,S4,S5,S6,S8,S9 | B | strong |
| Cartan decomposition | S1,S4,S5,S8,S9 | Start | strong |
| Cartan formula | S1,S6 | Stub | strong |
| Cartan matrix | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cartan model | S1,S6 | Stub | strong |
| Cartan pair | S1,S5,S6,S8 | Start | strong |
| Cartan subalgebra | S1,S4,S5,S8,S9 | Start | strong |
| Cartan subgroup | S1,S5,S6,S8,S9 | Start | strong |
| Cartan's criterion | S1,S5,S8,S9 | Start | strong |
| Cartan's equivalence method | S1,S5,S6,S8,S9 | Start | strong |
| Cartan's lemma | S6,S8,S9 | | S6 near |
| Cartan's lemma (potential theory) | S1,S5,S6,S8 | Stub | strong |
| Cartan's theorems A and B | S1,S5,S6,S8,S9 | Start | strong |
| Cartan–Ambrose–Hicks theorem | S1,S5,S8,S9 | C | strong |
| Cartan–Brauer–Hua theorem | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Cartan–Dieudonné theorem | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Cartan–Eilenberg resolution | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Cartan–Hadamard conjecture | S1,S6,S8,S9 | C | strong |
| Cartan–Hadamard theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cartan–Kuranishi prolongation theorem | S1,S5,S6,S8,S9 | Start | strong |
| Cartan–Kähler theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Carter constant | S3,S4,S5,S6,S8 | Start | strong |
| Carter subgroup | S1,S6,S9 | Stub | strong |
| Cartesian circle | S2 | Start | strong |
| Cartesian closed category | S1,S4,S5,S6,S8,S9 | C | strong |
| Cartesian coordinate system | S1,S4,S5,S6,S8,S9 | B | strong |
| Cartesian fibration | S1,S6,S8 | Start | strong |
| Cartesian monoid | S1,S6 | Stub | strong |
| Cartesian monoidal category | S1,S5,S6,S9 | Start | strong |
| Cartesian oval | S1,S5,S8,S9 | C | strong |
| Cartesian product | S1,S4,S5,S6,S8 | C | strong |
| Cartesian product of graphs | S1,S5,S6,S8 | Start | strong |
| Cartesian tensor | S1,S5,S6,S8,S9 | Start | strong |
| Cartier duality | S1,S5,S6,S9 | Start | strong |
| Cartier isomorphism | S1,S5,S6 | Stub | strong |
| Cartogram | S1,S2,S9 | C | strong |
| Cartwright's theorem | S1,S5,S6,S8,S9 | Stub | strong |
| Carus Mathematical Monographs | S1,S9 | Start | strong |
| Carveth Read | S2 | Start | strong |
| Carving width | S1,S5,S6 | C | strong |
| Caryn Navy | S1,S8 | B | strong |
| Casanova's Lottery | S2 | C | strong |
| Casas-Alvero conjecture | S1,S5,S6,S8,S9 | Start | strong |
| Cascade algorithm | S1,S4,S5,S6 | Start | strong |
| Case fatality rate | S2,S6 | Start | strong |
| Case-based reasoning | S2 | Start | strong |
| Casey Mann | S1,S9 | Stub | strong |
| Casey's theorem | S1,S5,S6,S8,S9 | Start | strong |
| Case–control study | S2 | C | strong |
| Cash–Karp method | S1,S6,S8,S9 | Stub | strong |
| Casimir effect | S3,S4,S5,S8 | B | strong |
| Casimir element | S1,S4,S5,S8,S9 | Start | strong |
| Casio Algebra FX Series | S1 | B | strong |
| Casio ClassPad 300 | S1,S8 | Start | strong |
| Casio fx-39 | S1 | Start | strong |
| Casio fx-3900Pv | S1 | Stub | strong |
| Casio fx-7000G | S1 | Start | strong |
| Casio V.P.A.M. calculators | S1 | | strong |
| Casorati–Weierstrass theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Caspar Isenkrahe | S1,S3,S8 | Start | strong |
| Caspar Wessel | S1,S6,S8,S9 | Start | strong |
| Cassini and Catalan identities | S1,S4,S5,S6,S9 | Start | strong |
| Cassini oval | S1,S5,S8,S9 | Start | strong |
| Casson handle | S1,S6,S9 | B | strong |
| Casson invariant | S1,S4,S5,S6,S8,S9 | Start | strong |
| CAST-128 | S2,S8 | Start | strong |
| CAST-256 | S2,S5 | Stub | strong |
| Castelnuovo curve | S1,S6 | Stub | strong |
| Castelnuovo surface | S1,S8,S9 | Stub | strong |
| Castelnuovo's contraction theorem | S1,S5,S6,S9 | Stub | strong |
| Castelnuovo–de Franchis theorem | S1,S5,S6,S8,S9 | Stub | strong |
| Castelnuovo–Mumford regularity | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Castigliano | S4 | | strong |
| Casting out nines | S1,S4,S5,S6 | C | strong |
| Casus irreducibilis | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cat's cradle | S6 | | S6 near |
| CAT(0) group | S1,S4,S6,S9 | Start | strong |
| CAT(k) space | S1,S4,S6,S8,S9 | C | strong |
| Catalan Mathematical Society | S1,S8,S9 | Start | strong |
| Catalan number | S1,S4,S5,S6,S8,S9 | C | strong |
| Catalan pseudoprime | S1,S5,S6,S8 | Stub | strong |
| Catalan solid | S1,S5,S8 | Start | strong |
| Catalan surface | S1,S5,S6,S8,S9 | Start | strong |
| Catalan's conjecture | S1,S5,S6,S8,S9 | Start | strong |
| Catalan's constant | S1,S5,S6,S8,S9 | Start | strong |
| Catalan's minimal surface | S1,S5,S6,S8,S9 | Stub | strong |
| Catalan's triangle | S1,S5,S6,S9 | Start | strong |
| Cataldo Agostinelli | S1,S8 | Start | strong |
| Catalecticant | S1,S6,S8 | Stub | strong |
| Catalog of articles in probability theory | S2,S6,S8,S9 | List | strong |
| Catalogue of Triangle Cubics | S1,S5,S6,S8,S9 | Start | strong |
| Catanese surface | S1,S8,S9 | Stub | strong |
| Catastro of Ensenada | S2 | Start | strong |
| Catastrophe theory | S1,S3,S4,S5,S6,S8 | C | strong |
| Catastrophic cancellation | S1,S4,S6,S8,S9 | C | strong |
| Catch-22 (logic) | S2,S6,S9 | C | strong |
| Categorical distribution | S1,S2,S5 | Start | strong |
| Categorical logic | S1,S4,S5,S6,S8,S9 | C | strong |
| Categorical probability | S1,S6,S8,S9 | Stub | strong |
| Categorical proposition | S2,S6,S8,S9 | Start | strong |
| Categorical quantum mechanics | S1,S3,S5,S6,S8,S9 | Start | strong |
| Categorical quotient | S1,S6,S9 | Stub | strong |
| Categorical set theory | S1,S5,S6,S8 | Stub | strong |
| Categorical theory | S1,S4,S5,S6,S8,S9 | Start | strong |
| Categorical topology | S6,S8,S9 | | S6 near |
| Categorical trace | S1,S5,S6,S9 | Start | strong |
| Categorical variable | S2,S5,S8,S9 | C | strong |
| Categories (Aristotle) | S2,S8,S9 | C | strong |
| Categories (Peirce) | S2,S9 | Start | strong |
| Categories for the Working Mathematician | S1,S5,S6,S8,S9 | Stub | strong |
| Categorification | S1,S6,S8,S9 | Start | strong |
| Category (mathematics) | S1,S4,S5,S6,S8,S9 | B | strong |
| Category algebra | S1,S5,S6,S9 | Start | strong |
| Category mistake | S2 | Start | strong |
| Category O | S1,S4,S6,S9 | Start | strong |
| Category of abelian groups | S1,S4,S5,S6,S8,S9 | Start | strong |
| Category of compactly generated weak Hausdorff spaces | S1,S6,S8,S9 | Start | strong |
| Category of elements | S1,S4,S5,S8 | Start | strong |
| Category of finite-dimensional Hilbert spaces | S1,S6 | Stub | strong |
| Category of groups | S1,S4,S5,S6,S8,S9 | Start | strong |
| Category of manifolds | S1,S6,S9 | Stub | strong |
| Category of Markov kernels | S1,S5,S6,S9 | Start | strong |
| Category of matrices | S1,S6,S9 | Start | strong |
| Category of measurable spaces | S1,S6,S9 | Start | strong |
| Category of metric spaces | S1,S6,S8,S9 | Start | strong |
| Category of modules | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Category of preordered sets | S1,S4,S6,S9 | Start | strong |
| Category of relations | S1,S6,S8,S9 | Start | strong |
| Category of representations | S1,S5,S6,S8,S9 | Start | strong |
| Category of rings | S1,S4,S5,S6,S8,S9 | C | strong |
| Category of sets | S1,S4,S5,S6,S8,S9 | Start | strong |
| Category of small categories | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Category of topological spaces | S1,S4,S5,S6,S8,S9 | Start | strong |
| Category of topological vector spaces | S1,S5,S6,S9 | Start | strong |
| Category theory | S1,S3,S4,S5,S6,S8,S9 | C | strong |
| Catenary | S1,S4,S5,S6,S8,S9 | B | strong |
| Catenary ring | S1,S4,S5,S6,S8,S9 | Start | strong |
| Catenoid | S1,S4,S5,S8 | Start | strong |
| Caterina Consani | S1,S5,S8,S9 | Start | strong |
| Caterpillar tree | S1,S5,S6,S8,S9 | C | strong |
| Catharina Stroppel | S1,S5,S8,S9 | Stub | strong |
| Catherine A. Roberts | S1 | Start | strong |
| Catherine Bandle | S1 | Start | strong |
| Catherine Cavagnaro | S1 | C | strong |
| Catherine de Parthenay | S1 | B | strong |
| Catherine Doléans-Dade | S1,S9 | Stub | strong |
| Catherine Goldstein | S1,S8,S9 | Start | strong |
| Catherine Greenhill | S1,S8,S9 | Start | strong |
| Catherine Hobbs | S1,S9 | C | strong |
| Catherine Meadows | S2,S8 | Start | strong |
| Catherine O'Sullivan | S1 | Start | strong |
| Catherine Searle | S1 | Start | strong |
| Catherine Yan | S1,S6,S8,S9 | Start | strong |
| Cathetus | S1,S5,S8 | Stub | strong |
| Cathleen Synge Morawetz | S1,S4,S8,S9 | C | strong |
| Cathleen Synge Morawetz Prize | S1,S6,S8,S9 | Start | strong |
| Catholic semigroup | S1,S6 | Stub | strong |
| Cathryn S. Dippo | S2,S8 | Start | strong |
| Cathy A. Cowan | S2,S8 | Start | strong |
| Cathy Ann Clark | S1 | Start | strong |
| Cathy Furlong | S2,S8 | Start | strong |
| Cathy Kessel | S1,S9 | Start | strong |
| Cathy O'Neil | S1,S9 | Start | strong |
| Cathérine Jami | S1 | Start | strong |
| Catmull–Clark subdivision surface | S3,S4,S8 | C | strong |
| Catuṣkoṭi | S2,S6 | C | strong |
| Caucher Birkar | S1,S8,S9 | C | strong |
| Cauchy boundary condition | S1,S5,S8 | Start | strong |
| Cauchy condensation test | S1,S4,S5,S6,S8 | Stub | strong |
| Cauchy distribution | S2,S4,S5,S8,S9 | B | strong |
| Cauchy elastic material | S3,S4,S8 | Start | strong |
| Cauchy formula for repeated integration | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy index | S1,S6,S8,S9 | Start | strong |
| Cauchy matrix | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy momentum equation | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy principal value | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy problem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy process | S1,S2,S8 | Start | strong |
| Cauchy product | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy sequence | S1,S4,S5,S6,S8,S9 | B | strong |
| Cauchy space | S1,S5,S6,S8,S9 | Start | strong |
| Cauchy stress tensor | S3,S4,S5,S6,S8,S9 | B | strong |
| Cauchy surface | S1,S3,S4,S5,S6,S8,S9 | Start | strong |
| Cauchy wavelet | S1,S6 | Start | strong |
| Cauchy's convergence test | S1,S4,S5,S6,S8 | Start | strong |
| Cauchy's functional equation | S1,S5,S6,S8,S9 | Start | strong |
| Cauchy's integral formula | S1,S4,S5,S6,S8,S9 | B | strong |
| Cauchy's integral theorem | S1,S4,S5,S6,S8,S9 | C | strong |
| Cauchy's limit theorem | S1,S5,S6 | Start | strong |
| Cauchy's theorem (geometry) | S1,S5,S6,S8,S9 | Start | strong |
| Cauchy's theorem (group theory) | S1,S5,S6,S8,S9 | Start | strong |
| Cauchy-continuous function | S1,S6,S8,S9 | Start | strong |
| Cauchy–Binet formula | S1,S4,S5,S6,S8 | C | strong |
| Cauchy–Euler equation | S1,S4,S5,S8,S9 | C | strong |
| Cauchy–Euler operator | S1,S5,S6,S8 | Stub | strong |
| Cauchy–Hadamard theorem | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Cauchy–Kovalevskaya theorem | S1,S4,S5,S6,S8,S9 | B | strong |
| Cauchy–Rassias stability | S1,S5,S6,S8,S9 | Start | strong |
| Cauchy–Riemann equations | S1,S4,S5,S6,S8,S9 | C | strong |
| Cauchy–Schwarz inequality | S1,S2,S4,S5,S6,S8,S9 | B | strong |
| Caucus for Women in Statistics and Data Science | S1,S2,S9 | Start | strong |
| Causal analysis | S2 | C | strong |
| Causal dynamical triangulation | S3,S4 | C | strong |
| Causal graph | S2,S3 | C | strong |
| Causal inference | S2,S4,S6,S9 | C | strong |
| Causal loop diagram | S1 | Start | strong |
| Causal Markov condition | S2 | Start | strong |
| Causal model | S2,S3,S9 | C | strong |
| Causal notation | S1 | C | strong |
| Causal research | S2 | Start | strong |
| Causal sets | S3,S4,S6 | C | strong |
| Causal structure | S3,S4,S5,S6,S9 | Start | strong |
| Causal system | S3,S4,S6,S8,S9 | Start | strong |
| Causality conditions | S3,S4,S6,S9 | Start | strong |
| Caustic (mathematics) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Caustic (optics) | S3,S4,S6,S9 | C | strong |
| Cavalieri | S4 | | strong |
| Cavalieri's principle | S1,S4,S5,S6,S8,S9 | C | strong |
| Cavalieri's quadrature formula | S1,S5,S6,S8,S9 | B | strong |
| Cavitation | S3,S4 | B | strong |
| Cavity method | S3,S4 | Stub | strong |
| Cavity perturbation theory | S1,S3 | B | strong |
| Cayley configuration space | S1,S6 | Start | strong |
| Cayley graph | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cayley plane | S1,S4,S5,S8,S9 | Stub | strong |
| Cayley table | S1,S4,S5,S6,S8 | Start | strong |
| Cayley transform | S1,S4,S5,S6,S8 | B | strong |
| Cayley's formula | S1,S5,S8,S9 | Start | strong |
| Cayley's mousetrap | S1,S5,S6,S8 | Stub | strong |
| Cayley's nodal cubic surface | S1,S5,S8,S9 | Stub | strong |
| Cayley's ruled cubic surface | S1,S5,S6,S8,S9 | Stub | strong |
| Cayley's sextic | S1,S5,S8,S9 | Stub | strong |
| Cayley's theorem | S1,S5,S6,S8,S9 | C | strong |
| Cayleyan | S1,S5,S6,S8,S9 | Stub | strong |
| Cayley–Bacharach theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cayley–Dickson construction | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cayley–Hamilton theorem | S1,S4,S5,S6,S8,S9 | B | strong |
| Cayley–Klein metric | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cayley–Menger determinant | S1,S4,S5,S6,S8 | Start | strong |
| Cayley–Purser algorithm | S2,S5,S8 | Start | strong |
| CBC-MAC | S2,S5 | C | strong |
| CC (complexity) | S1,S3,S5 | Start | strong |
| CC system | S1,S3,S6 | C | strong |
| CCM mode | S2 | Start | strong |
| CCR and CAR algebras | S3,S4,S6,S9 | Start | strong |
| CD-57 | S2 | Stub | strong |
| CDF-based nonparametric confidence interval | S2,S9 | C | strong |
| CDMA2000 | S2 | | strong |
| CDMF | S2,S6 | Stub | strong |
| Cecil J. Nesbitt | S1,S8,S9 | Stub | strong |
| Cecilia Krieger | S1,S8,S9 | Start | strong |
| Cecilia Wangechi Mwathi | S1 | Start | strong |
| CECPQ1 | S2,S6 | Start | strong |
| CECPQ2 | S2,S6 | Start | strong |
| Cederbaum's maximum flow theorem | S1,S5,S6 | Start | strong |
| CEILIDH | S2 | Start | strong |
| Ceiling effect (statistics) | S1,S2 | C | strong |
| CEK Machine | S1,S3 | Start | strong |
| Celestial equator | S5,S6,S9 | | S6 near |
| Celestial mechanics | S1,S3,S4,S5,S8 | C | strong |
| Celestial sphere | S4,S5,S6 | | strong |
| Celia Greenwood | S2 | Stub | strong |
| Celia Hoyles | S1,S8,S9 | C | strong |
| Cellular algebra | S1,S4,S5,S6 | C | strong |
| Cellular approximation theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cellular automaton | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Cellular decomposition | S1,S6,S9 | Start | strong |
| Cellular homology | S1,S4,S5,S6,S8 | Start | strong |
| Cellular Message Encryption Algorithm | S2,S5 | Start | strong |
| Cellular noise | S2,S6 | C | strong |
| Cellular space | S1,S5,S6 | Stub | strong |
| Cemal Yıldırım | S2 | Stub | strong |
| Censo General de Población y Vivienda | S2 | Start | strong |
| Censored regression model | S2,S9 | Stub | strong |
| Censoring (statistics) | S2,S4,S9 | Start | strong |
| Census | S2,S8,S9 | C | strong |
| Census and Statistics Department | S2 | Start | strong |
| Census block | S2 | Stub | strong |
| Census block group | S2 | Stub | strong |
| Census Enumerators' Books | S2 | Start | strong |
| Census geographic units of Canada | S2 | | strong |
| Census in Armenia | S2 | Start | strong |
| Census in Azerbaijan | S2 | Start | strong |
| Census in Botswana | S2 | C | strong |
| Census in Egypt | S2 | Start | strong |
| Census in the Dutch East Indies | S2 | Start | strong |
| Census Information Center | S2 | Start | strong |
| Census of agriculture | S2 | C | strong |
| Census tract | S2 | Start | strong |
| Census Transportation Planning Products Program | S2 | Start | strong |
| Center (algebra) | S1,S4,S6,S8,S9 | List | strong |
| Center (category theory) | S1,S5,S6,S9 | Stub | strong |
| Center (group theory) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Center (ring theory) | S1,S4,S6,S8,S9 | Stub | strong |
| Center for Mathematical Modeling | S1 | Stub | strong |
| Center for Mathematics and Theoretical Physics | S1,S3 | Stub | strong |
| Center for Scientific Computation and Mathematical Modeling | S1 | Start | strong |
| Center for Undergraduate Research in Mathematics | S1 | C | strong |
| Center for Women in Mathematics | S1 | Start | strong |
| Center manifold | S3,S4,S5,S6,S9 | Start | strong |
| Center of curvature | S1,S3,S5,S6,S9 | Stub | strong |
| Center of mass | S1,S3,S4,S5,S6,S8,S9 | C | strong |
| Center of Mathematical Sciences, Zhejiang University | S1,S9 | Stub | strong |
| Center squeeze | S1 | B | strong |
| Center-of-gravity method | S1,S6 | Start | strong |
| Centered coloring | S1,S6 | Start | strong |
| Centered cube number | S1,S5,S6,S9 | Start | strong |
| Centered decagonal number | S1,S5,S6,S9 | Stub | strong |
| Centered dodecahedral number | S1,S5,S6,S9 | Stub | strong |
| Centered heptagonal number | S1,S5,S6,S9 | Start | strong |
| Centered hexagonal number | S1,S5,S6,S8,S9 | Start | strong |
| Centered icosahedral number | S1,S5,S6,S9 | Stub | strong |
| Centered nonagonal number | S1,S5,S6,S9 | Stub | strong |
| Centered octagonal number | S1,S5,S6,S9 | Stub | strong |
| Centered octahedral number | S1,S5,S6,S9 | Start | strong |
| Centered polygonal number | S1,S5,S6,S9 | Start | strong |
| Centered polygonal number theorem | S1,S6,S9 | Stub | strong |
| Centered polyhedral number | S1,S5,S6,S9 | Stub | strong |
| Centered set | S1,S6,S8,S9 | Stub | strong |
| Centered square number | S1,S5,S6,S8,S9 | Start | strong |
| Centered tetrahedral number | S1,S5,S6,S9 | Stub | strong |
| Centered tree | S1,S5 | Stub | strong |
| Centered triangular number | S1,S5,S6,S9 | C | strong |
| Centered trochoid | S1,S8 | Start | strong |
| Centering matrix | S1,S2,S6,S9 | Start | strong |
| Centerpoint (geometry) | S1,S2,S4,S6,S9 | Start | strong |
| Centipede game | S4,S5,S6 | | strong |
| Centipede mathematics | S1,S6 | Start | strong |
| Central Agency for Public Mobilization and Statistics | S2 | Start | strong |
| Central angle | S1,S5,S6,S8,S9 | Start | strong |
| Central binomial coefficient | S1,S4,S5,S6,S8 | Start | strong |
| Central Bureau | S2,S6 | B | strong |
| Central Bureau of Statistics (Aruba) | S2 | Start | strong |
| Central Bureau of Statistics (North Korea) | S2 | C | strong |
| Central carrier | S1 | Start | strong |
| Central composite design | S2,S6,S8,S9 | Start | strong |
| Central configuration | S3,S4 | C | strong |
| Central differencing scheme | S1,S6,S9 | Start | strong |
| Central force | S3,S4,S5 | Start | strong |
| Central groupoid | S1,S6,S9 | C | strong |
| Central limit theorem | S1,S2,S4,S5,S6,S8,S9 | B | strong |
| Central limit theorem for directional statistics | S2,S5,S6 | Start | strong |
| Central line (geometry) | S1,S5,S6 | C | strong |
| Central location test | S2 | Start | strong |
| Central moment | S2,S4,S5,S6,S8,S9 | Start | strong |
| Central Organization for Statistics | S2 | Stub | strong |
| Central polynomial | S1,S4,S6,S9 | Stub | strong |
| Central product | S1,S5,S6 | Start | strong |
| Central series | S1,S4,S5,S6,S8,S9 | B | strong |
| Central simple algebra | S1,S4,S5,S6,S8,S9 | Start | strong |
| Central Statistical Office (United Kingdom) | S2 | C | strong |
| Central Statistics Office (Ireland) | S2 | Start | strong |
| Central subgroup | S1,S5,S6,S8,S9 | Stub | strong |
| Central triangle | S1,S5 | Start | strong |
| Centrality | S1,S4,S5,S6,S9 | B | strong |
| Centralizer and normalizer | S1,S4,S5,S6,S8,S9 | Start | strong |
| Centrally closed subgroup | S1,S6 | Stub | strong |
| Centre (geometry) | S1,S5,S6,S9 | Start | strong |
| Centre de mathématiques Laurent-Schwartz | S1 | Stub | strong |
| Centre de Recerca Matemàtica | S1,S9 | Stub | strong |
| Centre de Recherches Mathématiques | S1,S9 | Stub | strong |
| Centre for Applied Cryptographic Research | S2 | Stub | strong |
| Centre for Cybersecurity & Cybercrime Investigation | S2 | Start | strong |
| Centre for Mathematical Sciences (Kerala) | S1,S9 | Start | strong |
| Centre International de Mathématiques Pures et Appliquées | S1,S9 | Start | strong |
| Centre International de Rencontres Mathématiques | S1,S9 | Start | strong |
| Centre Mersenne | S1 | Start | strong |
| Centrifugal force | S3,S4,S5,S6,S8 | C | strong |
| Centro de Investigación en Matemáticas | S1,S9 | Stub | strong |
| Centroid | S1,S4,S5,S6,S8,S9 | C | strong |
| Centroidal Voronoi tessellation | S1,S6,S9 | Start | strong |
| Centrosymmetric matrix | S1,S5,S6,S9 | Start | strong |
| Centrum Wiskunde & Informatica | S1,S3,S8,S9 | Start | strong |
| CEP subgroup | S1,S6 | Stub | strong |
| Cepstrum | S2,S6 | C | strong |
| Cercignani conjecture | S1,S5,S6 | Stub | strong |
| Cereceda's conjecture | S1,S5,S6,S8 | C | strong |
| CEREMADE | S1 | Stub | strong |
| Cerf theory | S1,S4,S5,S6,S9 | Start | strong |
| CERNO test | S2,S5,S6 | | strong |
| CertCo | S2 | Start | strong |
| Certificate (complexity) | S1,S3 | Start | strong |
| Certificate authority | S2,S6 | C | strong |
| Certificate Management Protocol | S2,S3,S6 | Start | strong |
| Certificate policy | S2,S6 | Start | strong |
| Certificate revocation list | S2,S6,S8 | C | strong |
| Certificate signing request | S2,S6 | C | strong |
| Certificate Transparency | S2 | C | strong |
| Certificate-based encryption | S2,S6 | Stub | strong |
| Certificateless cryptography | S2,S6 | Stub | strong |
| Certification path validation algorithm | S2,S5,S6 | Start | strong |
| Certification Practice Statement | S2,S6 | Start | strong |
| Certified dominating set | S1,S6 | C | strong |
| Cesare Arzelà | S1,S8,S9 | Stub | strong |
| Cesare Burali-Forti | S1,S5,S8,S9 | Start | strong |
| Cesàro equation | S1,S5,S8 | Start | strong |
| Cesàro summation | S1,S4,S5,S6,S8 | Start | strong |
| Ceva | S4 | | strong |
| Ceva's theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cevian | S1,S5,S6,S8 | Start | strong |
| Ceyuan haijing | S1,S8,S9 | C | strong |
| Cezary Kaliszyk | S1,S3 | Start | strong |
| CH-quasigroup | S1 | Stub | strong |
| Chabauty topology | S1,S6,S9 | Stub | strong |
| ChaCha20-Poly1305 | S1,S2,S6 | C | strong |
| Chafee–Infante equation | S1,S8 | Stub | strong |
| Chaff algorithm | S5,S6 | | S6 near |
| Chaffing and winnowing | S2,S6 | Start | strong |
| Chaim Goodman-Strauss | S1,S6,S8,S9 | Start | strong |
| Chaim L. Pekeris | S1,S8 | Start | strong |
| Chaim Samuel Hönig | S1,S8 | Stub | strong |
| Chain (algebraic topology) | S1,S5,S6,S8,S9 | Start | strong |
| Chain code | S1,S6 | Start | strong |
| Chain complex | S1,S4,S5,S6,S8,S9 | C | strong |
| Chain linking | S2,S6 | Stub | strong |
| Chain rule | S1,S4,S5,S6,S8,S9 | C | strong |
| Chain rule (probability) | S2,S4,S5,S6,S9 | Start | strong |
| Chain rule for Kolmogorov complexity | S1,S2,S6 | Start | strong |
| Chain sequence | S1,S6 | Start | strong |
| Chain-ladder method | S4,S6 | | strong |
| Chained volume series | S2,S6 | Stub | strong |
| Chainstore paradox | S6 | | S6 near |
| Chair tiling | S1,S6,S8,S9 | Stub | strong |
| Chaitin's constant | S1,S5,S6,S8,S9 | C | strong |
| Chakravala method | S1,S5,S6,S8,S9 | Start | strong |
| Challenge-Handshake Authentication Protocol | S2 | Start | strong |
| Challenge–dechallenge–rechallenge | S2 | Start | strong |
| Challenge–response authentication | S2,S3 | Start | strong |
| Chamberlain's approach to unobserved effects models | S2,S6 | Start | strong |
| Chambolle–Pock algorithm | S1,S5,S6 | B | strong |
| Chamfer (geometry) | S1,S8,S9 | Start | strong |
| Chamfered dodecahedron | S1,S8,S9 | Stub | strong |
| Chamfered square tiling | S1,S6 | Start | strong |
| CHAMP (mathematics outreach program) | S1 | Start | strong |
| Champernowne constant | S1,S5,S6,S8,S9 | Start | strong |
| Champernowne distribution | S2,S5 | Start | strong |
| Chance constrained programming | S3,S4,S6 | C | strong |
| Chandler wobble | S4,S6 | | strong |
| Chandrasekhar limit | S3,S4,S5,S8 | B | strong |
| Chandrasekhar's H-function | S1,S3,S5,S6 | Start | strong |
| Chandrasekhar–Friedman–Schutz instability | S4 | | strong |
| Chandrasekhar–Page equations | S1,S3,S6 | Start | strong |
| Chandrasekhar–Wentzel lemma | S1,S6 | Stub | strong |
| Chandrashekhar | S4 | | strong |
| Chandrashekhar Khare | S1,S8,S9 | Stub | strong |
| Chang graphs | S1,S5,S6,S8 | Start | strong |
| Chang number | S1,S6 | Stub | strong |
| Chang Shih-Hsun | S1 | Start | strong |
| Chang's conjecture | S1,S6,S8,S9 | Stub | strong |
| Chang's model | S1,S6 | Stub | strong |
| Change detection | S2,S4 | Start | strong |
| Change detection (GIS) | S2 | Stub | strong |
| Change of basis | S1,S4,S5,S6,S8,S9 | Start | strong |
| Change of fiber | S1,S6,S8 | Start | strong |
| Change of rings | S1,S5,S6,S8,S9 | Start | strong |
| Change of variables | S1,S6,S8,S9 | C | strong |
| Change of variables (PDE) | S1,S5,S6 | Start | strong |
| Change-making problem | S1,S5,S6,S9 | Start | strong |
| Changpeng Zhao | S2 | Start | strong |
| Channel capacity | S4,S5,S6,S8 | | strong |
| Channel surface | S1,S5,S8 | Start | strong |
| Chantal David | S1,S8,S9 | Start | strong |
| Chan–Karolyi–Longstaff–Sanders process | S1,S2,S6,S9 | Start | strong |
| Chaocipher | S2 | Start | strong |
| Chaos theory | S1,S3,S4,S5,S6,S8 | B | strong |
| Chaotic cryptology | S2,S6 | Start | strong |
| Chaotic mixing | S1,S3,S6 | C | strong |
| Chaplygin problem | S1,S5,S6 | Stub | strong |
| Chaplygin sleigh | S3,S4,S5 | Stub | strong |
| Chaplygin's Theorem and Method for Solving ODE | S1,S5,S6 | Start | strong |
| Chapman–Enskog theory | S3,S4,S6,S9 | Stub | strong |
| Chapman–Jouguet condition | S3,S4 | C | strong |
| Chapman–Kolmogorov equation | S1,S2,S4,S5,S6,S8,S9 | Start | strong |
| Chapman–Robbins bound | S2,S5,S6 | C | strong |
| Character (mathematics) | S1,S4,S6,S8 | Start | strong |
| Character group | S1,S4,S5,S6,S8,S9 | Start | strong |
| Character module | S1,S6,S8 | Start | strong |
| Character sum | S1,S4,S5,S6,S9 | Start | strong |
| Character table | S1,S4,S5,S6,S9 | Start | strong |
| Character theory | S1,S4,S5,S6,S8 | C | strong |
| Character variety | S1,S6,S8 | Start | strong |
| Characteristic (algebra) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Characteristic 2 type | S1,S6 | Start | strong |
| Characteristic class | S1,S4,S5,S6,S8 | C | strong |
| Characteristic Classes | S1,S9 | C | strong |
| Characteristic equation (calculus) | S1,S4,S9 | C | strong |
| Characteristic function (probability theory) | S1,S2,S4,S5,S8,S9 | B | strong |
| Characteristic polynomial | S1,S4,S5,S6,S8,S9 | Start | strong |
| Characteristic samples | S1,S3,S6 | C | strong |
| Characteristic subgroup | S1,S4,S5,S6,S8 | Start | strong |
| Characteristic variety | S1,S4,S5,S6,S9 | Stub | strong |
| Characteristically simple group | S1,S5,S6,S8,S9 | Stub | strong |
| Characterization (mathematics) | S1,S5,S6,S8,S9 | C | strong |
| Characterization of probability distributions | S1,S6 | Start | strong |
| Characterizations of the exponential function | S1,S6,S8,S9 | B | strong |
| Charalambos Aliprantis | S1,S5,S8,S9 | Start | strong |
| Charge conservation | S3,S4,S5,S6 | B | strong |
| Charles | S4 | | strong |
| Charles Albert Noble | S1 | Start | strong |
| Charles Anthony Micchelli | S1,S8 | Start | strong |
| Charles Auguste Briot | S1,S8,S9 | Stub | strong |
| Charles Babbage | S1,S2,S5,S8,S9 | B | strong |
| Charles Bossut | S1,S9 | Start | strong |
| Charles Brenner (mathematician) | S1,S8 | Start | strong |
| Charles C. Conley | S1,S8,S9 | Stub | strong |
| Charles C. Lindner | S1,S9 | Start | strong |
| Charles C. Pugh | S1,S8,S9 | Stub | strong |
| Charles Clayton Grove | S1 | Stub | strong |
| Charles Cook (academic) | S1 | Start | strong |
| Charles Davies (professor) | S1 | Start | strong |
| Charles de Bovelles | S1,S2,S6,S8,S9 | Start | strong |
| Charles Dwight Lahr | S1 | Stub | strong |
| Charles E. Hall | S2 | Start | strong |
| Charles E. M. Pearce | S1 | Start | strong |
| Charles E. Roberts (mathematician) | S1,S3 | C | strong |
| Charles Earl Rickart | S1,S9 | Start | strong |
| Charles Ehresmann | S1,S4,S5,S8,S9 | C | strong |
| Charles Epstein (mathematician) | S1,S8,S9 | Start | strong |
| Charles F. Dunkl | S1,S8,S9 | Stub | strong |
| Charles F. Roos | S1,S6,S8,S9 | Stub | strong |
| Charles Fefferman | S1,S5,S8,S9 | C | strong |
| Charles Felton Pidgin | S2 | Start | strong |
| Charles George Broyden | S1,S9 | Stub | strong |
| Charles Graves (bishop) | S2,S9 | Start | strong |
| Charles Haros | S1,S6 | Start | strong |
| Charles Hayes (mathematician) | S1,S9 | Start | strong |
| Charles Hellaby | S1,S8 | C | strong |
| Charles Henry Rowe | S1,S8 | Stub | strong |
| Charles Henry Sampson | S1 | Stub | strong |
| Charles Hermite | S1,S5,S8,S9 | B | strong |
| Charles Howard Hinton | S1,S9 | C | strong |
| Charles Hutton | S1,S9 | C | strong |
| Charles J. Mendelsohn | S2 | Start | strong |
| Charles James Hargreave | S1,S9 | Start | strong |
| Charles Jasper Joly | S1,S9 | C | strong |
| Charles Joel Stone | S2,S8,S9 | Start | strong |
| Charles Julien Brianchon | S1,S9 | Stub | strong |
| Charles L. Bouton | S1 | Stub | strong |
| Charles L. Dolph | S1 | Stub | strong |
| Charles Leedham-Green | S1,S8,S9 | Start | strong |
| Charles Leonard Hamblin | S2 | C | strong |
| Charles Livingston (mathematician) | S1 | Stub | strong |
| Charles Loewner | S4,S8,S9 | | strong |
| Charles M. Stein | S2,S8,S9 | Stub | strong |
| Charles Marie de La Condamine | S1 | C | strong |
| Charles Minshall Jessop | S1,S8 | Stub | strong |
| Charles Méray | S1,S8,S9 | Stub | strong |
| Charles Napoleon Moore | S1,S8,S9 | Stub | strong |
| Charles Newton Little | S1,S9 | Start | strong |
| Charles Niven | S1,S3 | Start | strong |
| Charles P. Boyer | S1,S9 | Stub | strong |
| Charles Parsons (philosopher) | S2,S9 | Start | strong |
| Charles Pisot | S1,S9 | Stub | strong |
| Charles Radin | S1,S8,S9 | Start | strong |
| Charles Read (mathematician) | S1,S9 | Stub | strong |
| Charles Rezk | S1,S5,S8,S9 | Stub | strong |
| Charles Robert Hadlock | S1 | C | strong |
| Charles Roy Henderson | S2,S8,S9 | Start | strong |
| Charles Roy Henderson bibliography | S2,S6 | C | strong |
| Charles Royal Johnson | S1,S8,S9 | Stub | strong |
| Charles S. Peskin | S1,S3,S8,S9 | Start | strong |
| Charles Sanders Peirce | S1,S2,S5,S8,S9 | B | strong |
| Charles Sanders Peirce bibliography | S1,S2,S8 | List | strong |
| Charles Sims (mathematician) | S1,S6,S8,S9 | Stub | strong |
| Charles Smith (mathematician) | S1,S9 | Stub | strong |
| Charles Spearman | S2,S6,S8,S9 | C | strong |
| Charles Terrot (bishop) | S1 | Start | strong |
| Charles Tweedie | S1 | Start | strong |
| Charles W. Curtis | S1,S8,S9 | Stub | strong |
| Charles W. Trigg | S1,S6,S9 | Start | strong |
| Charles Watkins Merrifield | S1 | Stub | strong |
| Charles Weibel | S1,S5,S8,S9 | Stub | strong |
| Charles Wells (mathematician) | S1,S9 | Stub | strong |
| Charles William Clenshaw | S1 | Start | strong |
| Charles Étienne Louis Camus | S1 | Start | strong |
| Charles-Benjamin de Lubières | S1 | Start | strong |
| Charles-Eugène Delaunay | S1,S9 | Start | strong |
| Charles-Jean de La Vallée Poussin | S1,S5,S8,S9 | Start | strong |
| Charles-Joseph Mathon de la Cour | S1 | | strong |
| Charles-Michel Marle | S1,S5,S9 | Start | strong |
| Charles-René Reynaud | S1 | Stub | strong |
| Charlie Lee (computer scientist) | S2 | Start | strong |
| Charlie Reeve | S2 | Stub | strong |
| Charlier polynomials | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Charlotte Barnum | S1 | C | strong |
| Charlotte Elvira Pengra | S1 | Start | strong |
| Charlotte Scott | S1,S8,S9 | C | strong |
| Charlotte Wedell | S1,S8,S9 | Stub | strong |
| Charmaine Dean | S2,S8 | Start | strong |
| Chartered Mathematician | S1,S9 | Stub | strong |
| Chartered Statistician | S1,S2,S6 | Stub | strong |
| Charts on SO(3) | S1,S6 | Start | strong |
| Chases and Escapes | S1,S6 | C | strong |
| Chasles | S4 | | strong |
| Chasles' theorem (geometry) | S1,S5,S6,S8 | Stub | strong |
| Chasles' theorem (gravity) | S3,S5,S6,S8 | Stub | S6 near |
| Chasles' theorem (kinematics) | S1,S5,S6,S8,S9 | C | strong |
| Chasles–Cayley–Brill formula | S1,S5,S6,S8,S9 | Stub | strong |
| ChatSecure | S2 | Start | strong |
| Chaturbhuj Temple, Gwalior | S1 | Start | strong |
| Chauvenet's criterion | S2,S5 | Start | strong |
| Chawne Kimber | S1 | Start | strong |
| Chazelle polyhedron | S1 | Start | strong |
| Chazy equation | S1,S5 | Stub | strong |
| Chaïm Perelman | S2,S9 | C | strong |
| Cheap talk | S4,S6 | | strong |
| Chebfun | S1,S9 | Start | strong |
| Chebotarev density theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chebotarev theorem on roots of unity | S1,S5,S6 | Start | strong |
| Chebychev–Grübler–Kutzbach criterion | S4,S5 | | strong |
| Chebyshev center | S1,S2,S6,S8,S9 | C | strong |
| Chebyshev distance | S1,S4,S5,S6,S8,S9 | C | strong |
| Chebyshev equation | S1,S5,S8,S9 | Start | strong |
| Chebyshev function | S1,S4,S5,S6,S8,S9 | B | strong |
| Chebyshev integral | S1,S5,S6 | Stub | strong |
| Chebyshev iteration | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chebyshev nodes | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chebyshev polynomials | S1,S4,S5,S6,S8,S9 | B | strong |
| Chebyshev rational functions | S1,S5,S6,S9 | Start | strong |
| Chebyshev's bias | S1,S5,S6,S9 | Start | strong |
| Chebyshev's inequality | S1,S2,S5,S6,S8,S9 | B | strong |
| Chebyshev's sum inequality | S1,S5,S6,S8,S9 | Stub | strong |
| Chebyshev–Gauss quadrature | S1,S5,S6,S8 | Start | strong |
| Chebyshev–Markov–Stieltjes inequalities | S4,S5,S6,S8,S9 | | strong |
| Checking whether a coin is fair | S2 | C | strong |
| Cheeger bound | S1,S2,S5,S6,S9 | Stub | strong |
| Cheeger constant | S1,S4,S5,S8,S9 | Start | strong |
| Cheeger constant (graph theory) | S1,S4,S5,S6,S8,S9 | C | strong |
| Chehrzad Shakiban | S1,S8,S9 | C | strong |
| Chelsea Walton | S1,S9 | Start | strong |
| Chemical equation | S6 | | S6 near |
| Chemical equilibrium | S4,S5 | | strong |
| Chemical graph generator | S1 | B | strong |
| Chemical graph theory | S1,S4,S6,S9 | Stub | strong |
| Chemical potential | S3,S4,S5,S6 | C | strong |
| Chemical reaction network theory | S4,S6,S9 | | strong |
| Chemometrics | S2,S6,S8 | C | strong |
| Chemostat | S4 | | strong |
| Chemotaxis | S4,S6,S8 | | strong |
| Chen Chung Chang | S1,S9 | Stub | strong |
| Chen Greif | S1,S3 | Stub | strong |
| Chen Jingrun | S1,S5,S8,S9 | Start | strong |
| Chen Mufa | S1 | Stub | strong |
| Chen prime | S1,S5,S6,S8,S9 | Stub | strong |
| Chen's theorem | S1,S5,S6,S8,S9 | Start | strong |
| Chenchang Zhu | S1 | Start | strong |
| Cheng Hsiao | S2 | Start | strong |
| Cheng's eigenvalue comparison theorem | S1,S5,S8,S9 | Start | strong |
| Chennai Mathematical Institute | S1,S8,S9 | C | strong |
| Chennas Narayanan Namboodiripad | S1,S8 | Stub | strong |
| Chentsov's theorem | S1,S5,S6,S9 | Stub | strong |
| Chenyang Xu | S1,S8,S9 | Stub | strong |
| Chen–Gackstatter surface | S1,S5 | Stub | strong |
| Chern class | S1,S4,S5,S6,S8,S9 | B | strong |
| Chern Institute of Mathematics | S1 | Start | strong |
| Chern Medal | S1,S5,S8,S9 | Start | strong |
| Chern's conjecture (affine geometry) | S1,S5,S6,S8,S9 | Stub | strong |
| Chern's conjecture for hypersurfaces in spheres | S6,S8,S9 | | S6 near |
| Chernoff bound | S1,S2,S3,S4,S5,S6,S8 | Start | strong |
| Chernoff face | S1,S2,S5 | Start | strong |
| Chernoff's distribution | S2,S5,S9 | Stub | strong |
| Chern–Gauss–Bonnet theorem | S1,S4,S5,S6,S8,S9 | C | strong |
| Chern–Simons form | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chern–Simons theory | S3,S4,S5,S8 | B | strong |
| Chern–Weil homomorphism | S1,S4,S5,S6,S8,S9 | Start | strong |
| Cherry picking | S2,S9 | Start | strong |
| Cheryl's Birthday | S1,S6,S9 | C | strong |
| Chessboard complex | S1,S6,S9 | C | strong |
| Chessboard paradox | S5,S6,S9 | | S6 near |
| Chester Ittner Bliss | S2,S8,S9 | Stub | strong |
| Chetaev instability theorem | S3,S5,S6 | Stub | S6 near |
| Cheung–Marks theorem | S1,S5,S6 | Start | strong |
| Chevalley basis | S1,S4,S5,S8,S9 | Stub | strong |
| Chevalley restriction theorem | S1,S5,S6,S8 | Stub | strong |
| Chevalley scheme | S1,S5,S6 | Stub | strong |
| Chevalley's structure theorem | S1,S5,S6,S8,S9 | Start | strong |
| Chevalley–Iwahori–Nagata theorem | S1,S5,S6,S9 | Stub | strong |
| Chevalley–Shephard–Todd theorem | S1,S5,S6,S8,S9 | Start | strong |
| Chevalley–Warning theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chi distribution | S1,S2 | Start | strong |
| Chi-bounded | S1,S6 | C | strong |
| Chi-square automatic interaction detection | S2,S6 | Start | strong |
| Chi-squared distribution | S1,S2,S4,S5,S8,S9 | C | strong |
| Chi-squared test | S1,S2,S4,S5,S8,S9 | C | strong |
| Chia-Chiao Lin | S1,S3,S8,S9 | Start | strong |
| Chia-Kun Chu | S1 | Start | strong |
| Chiara Sabatti | S2 | Start | strong |
| Chiara Saffirio | S1,S3 | Start | strong |
| Chiasmus (cipher) | S2 | Stub | strong |
| Chicago movement | S1,S9 | Start | strong |
| Chicago school (mathematical analysis) | S1 | Stub | strong |
| Chicken (game) | S4,S6 | | strong |
| Chicken or the egg | S2,S6,S9 | C | strong |
| Chief series | S1,S6 | Start | strong |
| Chief Statistician of the United States | S2 | Start | strong |
| Chien search | S1,S5,S6 | Start | strong |
| Chien-Pai Han | S2 | C | strong |
| Chihara–Ismail polynomials | S1,S6,S8 | Stub | strong |
| Chikako Mese | S1,S8 | Start | strong |
| Children in clinical research | S2 | Start | strong |
| Chiliagon | S1,S6,S8 | Start | strong |
| Chilton and Colburn J-factor analogy | S4,S6 | | strong |
| Chinese hypothesis | S1,S5,S6,S8,S9 | Start | strong |
| Chinese mathematics | S1,S5,S8,S9 | C | strong |
| Chinese monoid | S1,S5,S6 | Stub | strong |
| Chinese multiplication table | S1 | Start | strong |
| Chinese numerals | S1,S5,S6,S8,S9 | C | strong |
| Chinese postman problem | S1,S5,S6,S8,S9 | Start | strong |
| Chinese remainder theorem | S1,S4,S5,S6,S8,S9 | C | strong |
| Chinese restaurant process | S2,S4,S9 | C | strong |
| Chinese room | S2,S6 | B | strong |
| Chip-firing game | S6,S9 | | S6 near |
| Chiral algebra | S1,S5,S6,S9 | Start | strong |
| Chiral anomaly | S3,S4,S5,S6,S8 | B | strong |
| Chiral homology | S1,S6,S9 | Stub | strong |
| Chiral knot | S1,S5,S8 | Start | strong |
| Chiral Lie algebra | S1 | Stub | strong |
| Chiral polytope | S1,S5,S9 | Start | strong |
| Chiral Potts model | S3,S4,S5,S6,S9 | Start | strong |
| Chirality | S1,S3,S5,S6,S9 | B | strong |
| Chirality (mathematics) | S1,S5,S6,S8,S9 | Start | strong |
| Chirp | S1,S6 | C | strong |
| Chirp Z-transform | S1,S4,S5,S8,S9 | C | strong |
| Chirplet transform | S1,S6,S8,S9 | C | strong |
| Chisanbop | S1,S6 | Start | strong |
| Chisini mean | S1,S5,S6 | Stub | strong |
| Chitikila Musili | S1,S9 | Stub | strong |
| Chiu-Chu Melissa Liu | S1,S8,S9 | Stub | strong |
| Chiungtze C. Tsen | S4,S8,S9 | | strong |
| Choi Yun Sung | S1 | Start | strong |
| Choi's theorem on completely positive maps | S1,S3,S5,S6,S8,S9 | C | strong |
| Choice function | S1,S4,S5,S6,S8,S9 | Start | strong |
| Choice model simulation | S1 | Start | strong |
| Choice sequence | S1,S5,S6,S8,S9 | Start | strong |
| Choi–Williams distribution function | S1,S2,S6 | Start | strong |
| Choked flow | S3,S4,S5 | C | strong |
| Cholesky decomposition | S1,S4,S5,S6,S8,S9 | C | strong |
| Chomp | S1,S6,S8,S9 | C | strong |
| Chomsky hierarchy | S1,S3,S4,S6,S8 | C | strong |
| Chomsky normal form | S3,S4,S6 | Start | strong |
| Chomsky–Schützenberger enumeration theorem | S1,S5,S6,S8 | Start | strong |
| Chomsky–Schützenberger representation theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Choquet game | S1,S5,S6,S9 | Start | strong |
| Choquet integral | S1,S4,S5,S6,S9 | Start | strong |
| Choquet theory | S1,S4,S5,S6,S8,S9 | Start | strong |
| Chord (geometry) | S1,S5,S6,S8,S9 | Start | strong |
| Chord diagram (information visualization) | S2,S3 | Start | strong |
| Chord diagram (mathematics) | S1,S6,S9 | Stub | strong |
| Chordal bipartite graph | S1,S6,S8 | Start | strong |
| Chordal completion | S1,S6,S8,S9 | Start | strong |
| Chordal graph | S1,S5,S6,S8 | B | strong |
| Choropleth map | S2,S9 | C | strong |
| Chosen-ciphertext attack | S2,S6 | Start | strong |
| Chosen-plaintext attack | S2 | Stub | strong |
| Chow group | S1,S4,S5,S6,S8,S9 | B | strong |
| Chow group of a stack | S1,S6,S9 | Start | strong |
| Chow test | S2,S5,S9 | Start | strong |
| Chow variety | S1,S5,S6,S9 | Start | strong |
| Chow's lemma | S1,S5,S6,S9 | Start | strong |
| Chow's moving lemma | S1,S5,S6,S9 | Stub | strong |
| Chowla–Mordell theorem | S1,S5,S6,S8,S9 | Stub | strong |
| Chowla–Selberg formula | S1,S5,S6,S8,S9 | Start | strong |
| Chow–Liu tree | S2 | C | strong |
| Chow–Rashevsky theorem | S1,S4,S5,S6,S9 | Stub | strong |
| Chris Brand | S2 | Start | strong |
| Chris Brink | S1 | Start | strong |
| Chris Danforth | S1,S3 | Stub | strong |
| Chris Freiling | S1,S8,S9 | Stub | strong |
| Chris Godsil | S1,S5,S8,S9 | Stub | strong |
| Chris Hall (cryptographer) | S1 | Stub | strong |
| Chris Rogers (mathematician) | S1,S9 | Stub | strong |
| Chris Skinner (statistician) | S2,S8 | Stub | strong |
| Chris Soteros | S1 | Stub | strong |
| Chris Stevens (mathematician) | S1,S9 | Start | strong |
| Christel Rotthaus | S1 | Start | strong |
| Christiaan Heij | S1 | Start | strong |
| Christiaan Huygens | S1,S3,S5,S8,S9 | GA | strong |
| Christian Beyel | S1 | Start | strong |
| Christian Bär | S1,S8,S9 | Stub | strong |
| Christian Genest | S1,S8,S9 | C | strong |
| Christian Goldbach | S1,S8,S9 | C | strong |
| Christian Gustav Adolph Mayer | S1,S8,S9 | Stub | strong |
| Christian Heinrich von Nagel | S1,S8,S9 | Start | strong |
| Christian Hennig | S2 | Start | strong |
| Christian Juel | S1,S5,S8,S9 | Start | strong |
| Christian Kramp | S1,S9 | Stub | strong |
| Christian Krattenthaler | S1,S9 | Stub | strong |
| Christian Lubich | S1,S8 | Stub | strong |
| Christian Pommerenke | S1,S8,S9 | Stub | strong |
| Christian Reiher | S1,S8,S9 | Stub | strong |
| Christian Reinsch | S1,S9 | Start | strong |
| Christian Robert | S2,S8,S9 | Start | strong |
| Christian Soize | S2 | Start | strong |
| Christian Weise | S1 | Start | strong |
| Christian Zeller | S1,S8 | Stub | strong |
| Christiane Rousseau | S1,S9 | Start | strong |
| Christiane Tammer | S1 | Start | strong |
| Christiane Tretter | S1,S9 | Start | strong |
| Christina Birkenhake | S1 | Start | strong |
| Christina Eubanks-Turner | S1 | C | strong |
| Christina Kendziorski | S2,S8 | Start | strong |
| Christina Pagel | S1 | Start | strong |
| Christina Sormani | S1,S9 | Start | strong |
| Christina Tønnesen-Friedman | S1,S9 | Stub | strong |
| Christine A. Franklin | S2,S8 | Start | strong |
| Christine Ayoub | S1,S9 | C | strong |
| Christine Bernardi | S1 | Start | strong |
| Christine Bessenrodt | S1,S8,S9 | Start | strong |
| Christine Bycroft | S2,S8 | Stub | strong |
| Christine Darden | S1 | C | strong |
| Christine De Mol | S1 | Start | strong |
| Christine Graffigne | S1,S8 | Stub | strong |
| Christine Guenther | S1,S9 | Stub | strong |
| Christine Heitsch | S1,S8 | Start | strong |
| Christine Kelley | S1,S8 | Start | strong |
| Christine Ladd-Franklin | S2,S8,S9 | B | strong |
| Christine Proust | S1,S8,S9 | C | strong |
| Christine Riedtmann | S1,S9 | Stub | strong |
| Christof Geiß | S1,S8 | Stub | strong |
| Christof Paar | S2 | Start | strong |
| Christof Schütte | S1,S8 | Start | strong |
| Christoffel symbols | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Christoffel–Darboux formula | S1,S4,S5,S6,S8,S9 | C | strong |
| Christoffer Dybvad | S1 | Stub | strong |
| Christofides algorithm | S1,S3,S4,S5,S6 | B | strong |
| Christological argument | S2 | Start | strong |
| Christoph Gudermann | S1,S8,S9 | Stub | strong |
| Christoph Koutschan | S1,S8,S9 | Start | strong |
| Christoph Rothmann | S1 | Start | strong |
| Christoph Rudolff | S1,S8,S9 | Stub | strong |
| Christoph Schwab | S1,S8 | Stub | strong |
| Christoph Thiele | S1,S8,S9 | Start | strong |
| Christoph von Sigwart | S2 | Start | strong |
| Christoph Zenger | S1,S8 | Start | strong |
| Christophe Breuil | S1,S6,S8,S9 | Start | strong |
| Christophe Gadbled | S1 | Stub | strong |
| Christophe Ley | S1,S2 | Start | strong |
| Christophe Soulé | S1,S8,S9 | Start | strong |
| Christopher Airay | S2 | Stub | strong |
| Christopher Clavius | S1,S8,S9 | C | strong |
| Christopher Deninger | S1,S5,S8,S9 | Stub | strong |
| Christopher Hacon | S1,S8,S9 | Stub | strong |
| Christopher Hooley | S1,S8,S9 | Stub | strong |
| Christopher I. Byrnes | S1,S6 | Start | strong |
| Christopher J. Bishop | S1,S8 | Start | strong |
| Christopher K. W. Tam | S1 | Stub | strong |
| Christopher Morcom | S1 | FA | strong |
| Christopher Skinner | S1,S8,S9 | Stub | strong |
| Christopher Wren | S1,S3,S8,S9 | B | strong |
| Christopher Zeeman | S1,S3,S8,S9 | C | strong |
| Christopher Zeeman Medal for Communication of Mathematics | S1,S9 | Start | strong |
| Christos Papakyriakopoulos | S1,S8,S9 | Start | strong |
| Christy Chuang-Stein | S2,S8 | Start | strong |
| Christ–Kiselev maximal inequality | S1,S6 | Start | strong |
| Chromatic homotopy theory | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Chromatic polynomial | S1,S3,S4,S5,S6,S8 | B | strong |
| Chromatic spectral sequence | S1,S5,S6,S9 | Stub | strong |
| Chromatic symmetric function | S1,S6 | Start | strong |
| Chronological snobbery | S2 | Stub | strong |
| Chronology of computation of pi | S1,S6,S8,S9 | List | strong |
| Chronology protection conjecture | S3,S4,S6,S9 | C | strong |
| Chronux | S2,S6 | Start | strong |
| Chrysippus | S2,S8,S9 | GA | strong |
| Chrysoula Tsogka | S1 | Start | strong |
| Chrystal's equation | S1,S3,S5,S6,S8,S9 | Stub | strong |
| CHSH inequality | S3,S4,S5,S6,S8,S9 | B | strong |
| Chu space | S1,S5,S6,S9 | Start | strong |
| Chua | S4 | | strong |
| Chuck Easttom | S2 | C | strong |
| Chuck Waseleski | S2 | Start | strong |
| Chudnovsky algorithm | S1,S4,S5,S6,S8 | Start | strong |
| Chudnovsky brothers | S1,S8,S9 | Start | strong |
| Chung Kai-lai | S1,S5,S8,S9 | C | strong |
| Chung Soon-yeong | S1 | Start | strong |
| Chung Tao Yang | S1,S5,S9 | Start | strong |
| Chung–Erdős inequality | S1,S2,S5,S6,S8,S9 | Stub | strong |
| Chung–Fuchs theorem | S1,S2,S5 | Start | strong |
| Chunking (division) | S1,S6,S9 | Stub | strong |
| Chunming Zhang | S2,S8 | Start | strong |
| Church encoding | S1,S3,S4,S6,S8,S9 | B | strong |
| Church's thesis (constructive mathematics) | S1,S5,S6,S9 | Start | strong |
| Churchill Eisenhart | S1,S2,S8,S9 | Stub | strong |
| Church–Rosser theorem | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Church–Turing thesis | S1,S3,S4,S5,S6,S8 | C | strong |
| Church–Turing–Deutsch principle | S1,S2,S3,S6,S8 | Start | strong |
| Churning (cipher) | S2 | Start | strong |
| Chuu-Lian Terng | S1,S8,S9 | Start | strong |
| Chu–Harrington limit | S4 | | strong |
| Chvátal graph | S1,S5,S6,S8 | Start | strong |
| Chvátal–Sankoff constants | S1,S6,S8 | C | strong |
| Châtelet surface | S1,S8,S9 | Stub | strong |
| Cicely Ridley | S1 | Start | strong |
| Cichoń's diagram | S1,S6,S8,S9 | Start | strong |
| Ciesielski isomorphism | S1,S6 | Start | strong |
| CIKS-1 | S2,S3 | Stub | strong |
| Cindy Greenwood | S1,S8,S9 | Start | strong |
| Cinquefoil knot | S1,S5,S6,S8,S9 | Start | strong |
| Cipher | S2,S5,S6,S8 | C | strong |
| Cipher Bureau (Poland) | S2,S6 | GA | strong |
| Cipher device | S2,S6 | Stub | strong |
| Cipher disk | S2 | | strong |
| Cipher runes | S2,S6 | Start | strong |
| Cipher security summary | S2,S6 | List | strong |
| Cipher suite | S2 | C | strong |
| CipherSaber | S2 | Start | strong |
| Ciphertext | S2,S5,S6,S8 | Start | strong |
| Ciphertext expansion | S2,S6 | Stub | strong |
| Ciphertext indistinguishability | S2,S4,S6 | C | strong |
| Ciphertext stealing | S2,S6 | C | strong |
| Ciphertext-only attack | S2,S6 | Start | strong |
| CIPHERUNICORN-A | S2 | Start | strong |
| CIPHERUNICORN-E | S2 | Start | strong |
| Ciphr | S2 | Stub | strong |
| Cipolla's algorithm | S1,S5,S6 | Stub | strong |
| Ciprian Foias | S1,S5,S8,S9 | Start | strong |
| Ciprian Manolescu | S1,S8,S9 | Start | strong |
| Circle | S1,S4,S5,S6,S8 | C | strong |
| Circle bundle | S1,S5,S6,S8 | Start | strong |
| Circle criterion | S3,S4,S5,S6,S8 | Stub | strong |
| Circle graph | S1,S6,S8,S9 | C | strong |
| Circle group | S1,S4,S5,S6,S8,S9 | Start | strong |
| Circle Limit III | S1,S6,S8,S9 | C | strong |
| Circle of antisimilitude | S1,S5,S6,S8,S9 | Start | strong |
| Circle of competence | S2,S6 | Start | strong |
| Circle packing | S1,S4,S6,S8 | C | strong |
| Circle packing in a circle | S1,S5,S6,S8,S9 | Start | strong |
| Circle packing in a square | S1,S6 | Start | strong |
| Circle packing in an equilateral triangle | S1,S6,S8,S9 | Stub | strong |
| Circle packing in an isosceles right triangle | S1,S6,S8,S9 | Stub | strong |
| Circle packing theorem | S1,S4,S5,S6,S8,S9 | GA | strong |
| Circle-valued Morse theory | S1,S6 | Stub | strong |
| Circles of Apollonius | S1,S6,S8 | B | strong |
| Circolo Matematico di Palermo | S1,S8,S9 | Start | strong |
| Circuit complexity | S1,S3,S4,S8 | C | strong |
| Circuit satisfiability problem | S1,S3,S5,S6,S8 | Start | strong |
| Circuit topology | S6,S9 | | S6 near |
| Circuits over sets of natural numbers | S6 | | S6 near |
| Circulant graph | S1,S5,S6 | Start | strong |
| Circulant matrix | S1,S4,S5,S6,S8,S9 | C | strong |
| Circular algebraic curve | S1,S6,S8,S9 | Start | strong |
| Circular analysis | S2 | Start | strong |
| Circular arc | S1,S6,S8 | Start | strong |
| Circular coloring | S1,S5,S6,S9 | Stub | strong |
| Circular convolution | S1,S6,S9 | Start | strong |
| Circular definition | S2,S9 | Start | strong |
| Circular distribution | S2,S5,S6,S8,S9 | Start | strong |
| Circular ensemble | S1,S6,S9 | Start | strong |
| Circular error probable | S2,S6 | Start | strong |
| Circular law | S1,S2,S6,S8,S9 | Start | strong |
| Circular layout | S1,S5,S6 | C | strong |
| Circular mean | S2,S6,S8,S9 | Start | strong |
| Circular motion | S1,S3,S6,S8 | C | strong |
| Circular points at infinity | S1,S6,S8,S9 | Start | strong |
| Circular prime | S1,S5,S6,S8,S9 | Start | strong |
| Circular reasoning | S2,S9 | Start | strong |
| Circular reference | S2 | Start | strong |
| Circular section | S1,S6,S9 | B | strong |
| Circular sector | S1,S5,S6,S8 | Start | strong |
| Circular segment | S1,S5,S6,S8 | Start | strong |
| Circular shift | S1,S3,S6,S9 | Start | strong |
| Circular surface | S1,S8 | Stub | strong |
| Circular symmetry | S1,S6,S8,S9 | Start | strong |
| Circular triangle | S1,S5,S8 | Start | strong |
| Circular uniform distribution | S2,S6,S9 | Start | strong |
| Circulation (physics) | S3,S4,S6 | Start | strong |
| Circulation problem | S1,S4,S5,S6,S9 | Start | strong |
| Circumcenter of mass | S1,S6,S9 | Start | strong |
| Circumcevian triangle | S1,S5,S6,S9 | Start | strong |
| Circumcircle | S1,S4,S5,S8 | B | strong |
| Circumconic and inconic | S1,S5,S8 | Start | strong |
| Circumference | S1,S5,S6,S8,S9 | Start | strong |
| Circumgon | S1,S5,S6,S9 | Start | strong |
| Circumscribed circle | S1,S5,S8 | List | strong |
| Circumscribed sphere | S1,S4,S5,S6,S9 | Start | strong |
| Circumscription (logic) | S1,S6 | C | strong |
| Ciro Ciliberto | S1,S9 | Start | strong |
| Cirquent calculus | S1,S6,S8,S9 | C | strong |
| Cis (mathematics) | S1,S5,S6,S8,S9 | Stub | strong |
| Cisinski model structure | S1,S6 | Start | strong |
| Cissoid | S1,S5,S8,S9 | Start | strong |
| Cissoid of Diocles | S1,S5,S6,S8,S9 | Start | strong |
| Cistercian numerals | S1,S3,S5,S6,S8 | GA | strong |
| Citizen survey | S2 | Start | strong |
| Citizenfour | S2 | C | strong |
| Civic statistics | S2,S6 | Start | strong |
| Civilian noninstitutional population | S2 | Stub | strong |
| Claiborne Latimer | S1 | Stub | strong |
| Claim (philosophy) | S2 | Start | strong |
| Clairaut's equation | S1,S4,S5,S8,S9 | Start | strong |
| Clairaut's relation (differential geometry) | S1,S5,S6,S9 | Stub | strong |
| Claire Mathieu | S1,S3,S8,S9 | Stub | strong |
| Claire McKay Bowen | S2,S8 | Start | strong |
| Claire Miller | S2 | Start | strong |
| Claire Postlethwaite | S1 | Start | strong |
| Claire Prada | S1 | Start | strong |
| Claire Voisin | S1,S5,S8,S9 | Start | strong |
| Clara Eliza Smith | S1 | Start | strong |
| Clara Latimer Bacon | S1,S9 | Start | strong |
| Clara Torres Latorre | S1 | Start | strong |
| Clarence Abiathar Waldo | S1 | Stub | strong |
| Clarence F. Stephens | S1 | Start | strong |
| Clarence Lemuel Elisha Moore | S1,S9 | Start | strong |
| Clarence Raymond Adams | S1,S9 | Stub | strong |
| Claribel Kendall | S1 | Start | strong |
| Clarice Poon | S1,S9 | Start | strong |
| Clarity test | S2 | Start | strong |
| Clark Barwick | S1,S5,S8,S9 | Start | strong |
| Clark Glymour | S2 | Start | strong |
| Clark Kimberling | S1,S8,S9 | Stub | strong |
| Clarke generalized derivative | S1,S4,S6,S8 | Start | strong |
| Clarkson's inequalities | S1,S6,S8,S9 | Stub | strong |
| Clark–Ocone theorem | S1,S2,S5,S6,S8,S9 | Start | strong |
| Clasper (mathematics) | S1,S6,S8,S9 | Start | strong |
| Class (philosophy) | S2,S9 | Start | strong |
| Class (set theory) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Class field theory | S1,S4,S5,S6,S8 | C | strong |
| Class formation | S1,S6,S8,S9 | B | strong |
| Class function | S1,S5,S6,S8,S9 | Start | strong |
| Class kappa function | S1,S6 | Stub | strong |
| Class logic | S1,S6 | Start | strong |
| Class number formula | S1,S4,S5,S6,S8,S9 | Start | strong |
| Class number problem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Class of groups | S1,S5,S6 | Start | strong |
| Classical cipher | S2 | Start | strong |
| Classical definition of probability | S1,S2,S4,S6,S9 | Start | strong |
| Classical Electrodynamics (book) | S1,S3,S6 | B | strong |
| Classical electromagnetism | S3,S4,S6 | B | strong |
| Classical field theory | S3,S4,S5,S6,S8,S9 | B | strong |
| Classical group | S1,S4,S5,S6,S8,S9 | C | strong |
| Classical Hamiltonian quaternions | S1,S5,S6,S9 | Start | strong |
| Classical Heisenberg model | S1,S3,S4 | Start | strong |
| Classical involution theorem | S1,S5 | Stub | strong |
| Classical Lie algebras | S1,S9 | Stub | strong |
| Classical logic | S2,S5,S6,S8,S9 | Start | strong |
| Classical mechanics | S1,S3,S4,S5,S8 | C | strong |
| Classical Mechanics (Goldstein) | S1,S3,S8 | B | strong |
| Classical modal logic | S1,S5,S6,S9 | Stub | strong |
| Classical modular curve | S1,S6,S8,S9 | Start | strong |
| Classical orthogonal polynomials | S1,S4,S5,S6,S8,S9 | B | strong |
| Classical test theory | S2,S6,S9 | Start | strong |
| Classical Wiener space | S1,S2,S4,S5,S6,S9 | C | strong |
| Classical XY model | S3,S4,S9 | Start | strong |
| Classification | S2,S3 | C | strong |
| Classification of Clifford algebras | S1,S6,S9 | Start | strong |
| Classification of discontinuities | S1,S4,S5,S6,S8,S9 | Start | strong |
| Classification of Fatou components | S3,S4,S5,S6,S9 | Stub | strong |
| Classification of finite simple groups | S1,S4,S5,S6,S8,S9 | B | strong |
| Classification of low-dimensional real Lie algebras | S1,S4,S6,S9 | Start | strong |
| Classification of manifolds | S1,S4,S5,S6,S8,S9 | Start | strong |
| Classification rule | S2 | C | strong |
| Classification theorem | S1,S6,S8,S9 | Start | strong |
| Classifier chains | S2 | Start | strong |
| Classifying space | S1,S4,S5,S6,S8,S9 | Start | strong |
| Classifying space for O(n) | S1,S6,S9 | Stub | strong |
| Classifying space for SO(n) | S1,S6,S9 | | strong |
| Classifying space for SU(n) | S1,S6,S9 | | strong |
| Classifying space for U(n) | S1,S5,S6 | Start | strong |
| Classifying topos | S1,S4,S5,S6,S9 | Stub | strong |
| Claude Ambrose Rogers | S1,S8,S9 | Stub | strong |
| Claude Berge | S1,S6,S8,S9 | Stub | strong |
| Claude Chabauty | S1,S9 | Stub | strong |
| Claude Chevalley | S1,S4,S5,S8,S9 | Start | strong |
| Claude Dechales | S1 | Stub | strong |
| Claude E. Robinson | S2,S8 | Start | strong |
| Claude Gaspar Bachet de Méziriac | S1,S5,S6,S9 | Start | strong |
| Claude LeBrun | S1,S8,S9 | Start | strong |
| Claude Lemaréchal | S1,S3,S9 | Start | strong |
| Claude Mydorge | S1,S9 | Start | strong |
| Claude Sabbah | S1,S5,S9 | Stub | strong |
| Claude Shannon | S1,S2,S3,S5,S6,S8,S9 | C | strong |
| Claude-Louis Mathieu | S1 | Stub | strong |
| Claudia Klüppelberg | S1 | Start | strong |
| Claudia Neuhauser | S1,S8,S9 | Start | strong |
| Claudia Polini | S1 | Start | strong |
| Claudia Spiro | S1,S8,S9 | Start | strong |
| Claudia Zaslavsky | S1,S8,S9 | Start | strong |
| Claudio Baiocchi | S1,S6,S8,S9 | Start | strong |
| Claudio Procesi | S1,S5,S8,S9 | Stub | strong |
| Claus Michael Ringel | S1,S8,S9 | Start | strong |
| Claus Moser, Baron Moser | S2,S8,S9 | C | strong |
| Claus P. Schnorr | S1,S8,S9 | Stub | strong |
| Clause (logic) | S1,S2,S5,S6,S8,S9 | Start | strong |
| Clausen | S4 | | strong |
| Clausen function | S1,S4,S5,S6,S8,S9 | C | strong |
| Clausen's formula | S1,S5,S6 | Stub | strong |
| Clausius theorem | S3,S4,S5,S6,S8,S9 | Start | strong |
| Clausius–Clapeyron relation | S3,S4,S6 | C | strong |
| Clausius–Duhem inequality | S3,S4,S8 | Start | strong |
| Clausius–Mossotti relation | S1,S3,S4,S5,S6 | Start | strong |
| Clavis mathematicae | S1 | Stub | strong |
| Claw finding problem | S1 | Start | strong |
| Claw-free graph | S1,S5,S6,S8,S9 | B | strong |
| Claw-free permutation | S2,S6 | Start | strong |
| Clawson point | S1,S5,S8 | Start | strong |
| Clay Mathematics Institute | S1,S8,S9 | Start | strong |
| Clay Mathematics Monographs | S1,S9 | Stub | strong |
| Clay Research Award | S1,S8,S9 | Start | strong |
| Clean ring | S1,S4,S6 | Stub | strong |
| Clearing denominators | S1,S6,S9 | Start | strong |
| Cleaver (geometry) | S1,S6,S8 | Start | strong |
| Clebsch graph | S1,S5,S6,S8 | Stub | strong |
| Clebsch representation | S1,S3,S5,S6 | Start | strong |
| Clebsch surface | S1,S5,S8,S9 | Start | strong |
| Clebsch–Gordan coefficients | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| CLEFIA | S2,S5 | Stub | strong |
| Clelia Grillo Borromeo | S1 | C | strong |
| Clemency Montelle | S1,S9 | Start | strong |
| Clement W. H. Lam | S1,S6,S9 | Stub | strong |
| Clenshaw algorithm | S1,S4,S5,S6,S8,S9 | Start | strong |
| Clenshaw–Curtis quadrature | S1,S4,S6,S8 | C | strong |
| Cleo (mathematician) | S1 | B | strong |
| Cleo Youtz | S2 | Start | strong |
| Cleota Gage Fry | S1 | Start | strong |
| Cleve Moler | S1,S3,S8,S9 | Start | strong |
| Click analytics | S2 | Stub | strong |
| Client-side encryption | S2,S6 | C | strong |
| Clifford algebra | S1,S4,S5,S6,S8,S9 | B | strong |
| Clifford analysis | S1,S3,S4,S6,S8,S9 | C | strong |
| Clifford bundle | S1,S5,S6,S9 | Start | strong |
| Clifford Clogg | S1,S2,S8 | Start | strong |
| Clifford Cocks | S1,S2,S8,S9 | C | strong |
| Clifford group | S1,S3,S4,S6,S9 | C | strong |
| Clifford Martin Will | S1,S3,S8,S9 | Start | strong |
| Clifford module | S1,S4,S5,S6,S8,S9 | Start | strong |
| Clifford module bundle | S1,S5,S6,S9 | Stub | strong |
| Clifford parallel | S1,S5,S9 | Start | strong |
| Clifford semigroup | S1,S6 | Stub | strong |
| Clifford Taubes | S1,S5,S8,S9 | Start | strong |
| Clifford theory | S1,S4,S5,S6,S8 | Start | strong |
| Clifford torus | S1,S5,S6,S8,S9 | B | strong |
| Clifford's circle theorems | S1,S5,S8,S9 | Stub | strong |
| Clifford's theorem on special divisors | S1,S5,S6,S8,S9 | C | strong |
| Clifford–Klein form | S1,S4,S5,S6,S8 | Stub | strong |
| Clifton–Pohl torus | S1,S5,S6,S9 | Start | strong |
| Climate ensemble | S2 | Start | strong |
| Climate model | S4,S8 | | strong |
| Climate sensitivity | S4 | | strong |
| Climograph | S2 | Start | strong |
| Clinical endpoint | S2,S9 | | strong |
| Clinical significance | S2,S6 | C | strong |
| Clinical study design | S1,S2,S8,S9 | Start | strong |
| Clinical trial | S2,S8,S9 | C | strong |
| Cliodynamics | S1,S6 | Start | strong |
| Clipper chip | S2,S6 | C | strong |
| Clipping (signal processing) | S1,S6 | Start | strong |
| Clique (graph theory) | S1,S4,S5,S6,S8,S9 | C | strong |
| Clique complex | S1,S6,S9 | B | strong |
| Clique cover | S1,S5,S6,S8,S9 | C | strong |
| Clique game | S1,S6 | Start | strong |
| Clique problem | S1,S3,S5,S6,S8,S9 | GA | strong |
| Clique-sum | S1,S3,S6 | Start | strong |
| Clique-width | S1,S5,S6,S8 | Start | strong |
| Cliquish function | S1,S6 | Stub | strong |
| Clive Humby | S1 | C | strong |