| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Caccioppoli | R. | 1928 | Bologna | Analysis |
| Caffarelli | Luis A. | 1983 | Warszawa | Part. Diff. Equations |
| Caffarelli | Luis A. | 2002 | Beijing | Plenary |
| Caflish | Russel | 2006 | Madrid | Applications of Mathematics in the Sciences |
| Cahen | A. | 1928 | Bologna | Analysis |
| Cajori | Florian | 1924 | Toronto | History, Philosophy, Didactics |
| Calabrese | C. | 1928 | Bologna | Analysis |
| Calderon | A. P. | 1950 | Cambridge (USA) | |
| Calderon | A. P. | 1966 | Moskva | Partial differential equations |
| Calderon | P. | 1978 | Helsinki | Plenary |
| Calegari | Danny | 2022 | Virtual | Geometry |
| Calegari | Frank | 2022 | Virtual | Special Plenary Lecture |
| Camacho | César | 1990 | Kyoto | Ordinary Differential Equations & Dynamical Systems |
| Cameron | Peter J. | 1990 | Kyoto | Combinatorics |
| Caminati | P. | 1928 | Bologna | Elementary Mathematics, Didactical Questions, Mathematical Logic |
| Campbell | G.A. | 1924 | Toronto | Engineering |
| Campbell | G.A. | 1924 | Toronto | Mechanics, Physics, Astronomy, Geophysics |
| Cances | Eric | 2014 | Seoul | Mathematics in Science and Technology |
| Candes | Emmanuel | 2006 | Madrid | Applications of Mathematics in the Sciences |
| Candes | Emmanuel | 2014 | Seoul | Plenary |
| Candido | G. | 1928 | Bologna | Analysis |
| Candido | Giacomo | 1932 | Zurich | Algebra and Number Theory |
| Canevazzi | S. | 1908 | Rome | Various Applications of Mathematics |
| Cannon | J. W. | 1978 | Helsinki | Topology |
| Cantat | Serge | 2018 | Rio de Janeiro | Algebraic and Complex Geometry, Dynamical Systems and Ordinary Differential Equations |