| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Chorin | A. J. | 1986 | Berkeley | Numerical Methods & Computing |
| Chou | P. Y. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Chowla | S. | 1950 | Cambridge (USA) | |
| Christ | Michael | 1990 | Kyoto | Real & Complex Analysis |
| Christ | Michael | 1998 | Berlin | Analysis |
| Christodoulou | Demetrios | 1990 | Kyoto | Partial Differential Equations |
| Christodoulou | Demetrios | 2014 | Seoul | Plenary |
| Chuard | Jules | 1932 | Zurich | Geometry |
| Chudakov | N. | 1970 | Nice | Algebra |
| Chudnovsky | G. V. | 1978 | Helsinki | Number Theory |
| Chudnovsky | Maria | 2014 | Seoul | Combinatorics |
| Chung | Fan R. K. | 1994 | Zurich | Combinatorics |
| Chung | K. L. | 1958 | Edinburgh | Probability & Statistics |
| Chung | Kai Lai | 1970 | Nice | Analysis |
| Church | A. | 1962 | Stockholm | Plenary |
| Chuzhoy | Julia | 2014 | Seoul | Mathematical Aspects of Computer Science |
| Chwistek | L. | 1928 | Bologna | Elementary Mathematics, Didactical Questions, Mathematical Logic |
| Ciarlet | Philippe G. | 1994 | Zurich | Numerical Analysis & Scientific Computing |
| Cieliebak | Kai | 2022 | Virtual | Geometry, Topology |
| Ciesielski | Z. | 1974 | Vancouver | General Topology, Real & Functional Analysis |
| Cinquini | Silvio | 1932 | Zurich | Analysis |
| Clapier | C. | 1928 | Bologna | Elementary Mathematics, Didactical Questions, Mathematical Logic |
| Clapier | Dr. | 1920 | Strasbourg | Geometry |
| Clarke | F. H. | 1978 | Helsinki | Control Theory & Optimization |
| Clarkson | James A. | 1932 | Zurich | Analysis |