| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Chern | S. S. | 1950 | Cambridge (USA) | Plenary |
| Chern | Shiing-Shen | 1970 | Nice | Plenary |
| Chevalley | C. | 1958 | Edinburgh | Plenary |
| Christodoulou | Demetrios | 2014 | Seoul | Plenary |
| Church | A. | 1962 | Stockholm | Plenary |
| Coifman | Ronald | 2018 | Rio de Janeiro | Plenary |
| Colding | Tobias Holck | 2022 | Virtual | Plenary Lecture |
| Connes | A. | 1978 | Helsinki | Plenary |
| Conway | John H. | 1994 | Zurich | Plenary |
| Cook | Stephen A. | 1990 | Kyoto | Plenary |
| Coron | Jean-Michel | 2010 | Hyderabad | Plenary |
| Corput | J. van der | 1936 | Oslo | Plenary |
| Darboux | G. | 1908 | Rome | Plenary |
| Daskalakis | Constantinos | 2018 | Rio de Janeiro | Plenary/Prize winner |
| Daubechies | Ingrid | 1994 | Zurich | Plenary |
| Davenport | H. | 1950 | Cambridge (USA) | Plenary |
| De Branges | L. | 1986 | Berkeley | Plenary |
| De Lellis | Camillo | 2022 | Virtual | Plenary Lecture |
| Debreu | Gerard | 1974 | Vancouver | Plenary |
| Deift | Percy | 2006 | Madrid | Plenary |
| Deligne | Pierre | 1974 | Vancouver | Plenary |
| Demailly | Jean-Pierre | 2006 | Madrid | Plenary |
| Deninger | Christopher | 1998 | Berlin | Plenary |
| DeVore | Ronald | 2006 | Madrid | Plenary |
| Diaconis | Persi | 1998 | Berlin | Plenary |