| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Borsuk | K. | 1954 | Amsterdam | Plenary |
| Bott | Raoul | 1970 | Nice | Plenary |
| Bourgain | Jean | 1994 | Zurich | Plenary/Prize winner |
| Brauer | R. | 1954 | Amsterdam | Plenary |
| Braverman | Mark | 2022 | Virtual | Plenary/Prize winner |
| Bressan | Alberto | 2002 | Beijing | Plenary |
| Brezzi | Franco | 2014 | Seoul | Plenary |
| Browder | William | 1970 | Nice | Plenary |
| Brown | E.W. | 1912 | Cambridge | Plenary |
| Buzzard | Kevin | 2022 | Virtual | Special Plenary Lecture |
| Caffarelli | Luis A. | 2002 | Beijing | Plenary |
| Calderon | P. | 1978 | Helsinki | Plenary |
| Calegari | Frank | 2022 | Virtual | Special Plenary Lecture |
| Candes | Emmanuel | 2014 | Seoul | Plenary |
| Cantor | Moritz | 1900 | Paris | Plenary |
| Carathéodry | C. | 1932 | Zurich | Plenary |
| Carleman | Torsten | 1932 | Zurich | Plenary |
| Carleson | L. | 1966 | Moskva | Plenary |
| Cartan | Élie | 1924 | Toronto | Plenary |
| Cartan | Elie | 1932 | Zurich | Plenary |
| Cartan | Elie | 1936 | Oslo | Plenary |
| Cartan | H. | 1950 | Cambridge (USA) | Plenary |
| Cartan | H. | 1958 | Edinburgh | Plenary |
| Castelnuovo | Guido | 1928 | Bologna | Plenary |
| Chang | Sun-Yung Alice | 2002 | Beijing | Plenary |