| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Goldstein | Catherine | 2018 | Rio de Janeiro | Plenary |
| Goldstein | S. | 1954 | Amsterdam | Plenary |
| Goldwasser | Shafi | 2002 | Beijing | Plenary |
| Gorenstein | D. | 1978 | Helsinki | Plenary |
| Gowers | Timothy | 1998 | Berlin | Plenary/Prize winner |
| Grauert | H. | 1962 | Stockholm | Plenary |
| Green | Ben | 2014 | Seoul | Plenary |
| Greenhill | A.G. | 1904 | Heidelberg | Plenary |
| Griffiths | Phillip A. | 1970 | Nice | Plenary |
| Gromov | M. | 1986 | Berkeley | Plenary |
| Grothendieck | A. | 1958 | Edinburgh | Plenary |
| Guionnet | Alice | 2022 | Virtual | Plenary Lecture |
| Guth | Larry | 2022 | Virtual | Plenary Lecture |
| Haagerup | Uffe | 2002 | Beijing | Plenary |
| Hackbusch | Wolfgang | 1998 | Berlin | Plenary |
| Hadamard | Jacques | 1928 | Bologna | Plenary |
| Hamilton | Richard | 2006 | Madrid | Plenary |
| Harish Chandra | 1954 | Amsterdam | Plenary | |
| Harish-Chandra | 1966 | Moskva | Plenary | |
| Hasse | H. | 1936 | Oslo | Plenary |
| Hecke | Erich | 1936 | Oslo | Plenary |
| Henrici | P. | 1962 | Stockholm | Plenary |
| Hilbert | D. | 1928 | Bologna | Plenary |
| Hilbert | David | 1900 | Paris | Plenary |
| Hirzebruch | F. | 1958 | Edinburgh | Plenary |