| Last Name | First Name | Year | City | Section/Speaker Type Sort descending |
|---|---|---|---|---|
| Guichard | C. | 1904 | Heidelberg | Geometry |
| Guth | Larry | 2010 | Hyderabad | Geometry |
| Hamburger | H. | 1932 | Zurich | Geometry |
| Hardt | R. M. | 1986 | Berkeley | Geometry |
| Haskell | M. W. | 1928 | Bologna | Geometry |
| Haskell | M.W. | 1924 | Toronto | Geometry |
| Hatzidakis | N. | 1912 | Cambridge | Geometry |
| Hatzidakis | N. | 1920 | Strasbourg | Geometry |
| Hatzidakis | N. | 1928 | Bologna | Geometry |
| Hatzidakis | N. | 1932 | Zurich | Geometry |
| Hingston | Nancy | 2014 | Seoul | Geometry |
| Hitchin | N. J. | 1983 | Warszawa | Geometry |
| Hlavaty | V. | 1928 | Bologna | Geometry |
| Hofer | Helmut | 1990 | Kyoto | Geometry |
| Hollcroft | Temple Rice | 1932 | Zurich | Geometry |
| Honda | Ko | 2006 | Madrid | Geometry |
| Hopf | Heinz | 1932 | Zurich | Geometry |
| Hostinsky | B. | 1912 | Cambridge | Geometry |
| Hostinsky | B. | 1920 | Strasbourg | Geometry |
| Hudson | H.P. | 1912 | Cambridge | Geometry |
| Hurewicz | W. | 1932 | Zurich | Geometry |
| Issaly | 1900 | Paris | Geometry | |
| Ivanov | Sergei | 2010 | Hyderabad | Geometry |
| Jamet | V. | 1900 | Paris | Geometry |
| Janet | M. | 1924 | Toronto | Geometry |