| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Thomee | V. | 1978 | Helsinki | Numerical Analysis |
| Thompson | D'Arcy W. | 1924 | Toronto | Geometry |
| Thompson | J. G. | 1962 | Stockholm | Algebra & Theory of Numbers |
| Thompson | J. G. | 1966 | Moskva | Plenary |
| Thompson | J. H. C. | 1936 | Oslo | Mathematical Physics, Astronomy and Geophysics |
| Thomsen | G. | 1928 | Bologna | Geometry |
| Thomsen | Gerhard | 1932 | Zurich | Geometry |
| Thomson | J. G. | 1970 | Nice | Algebra |
| Thomson | Sir J.J. | 1912 | Cambridge | Mechanics, Physical Mathematics, Astronomy |
| Thorne | Jack | 2018 | Rio de Janeiro | Number Theory |
| Threlfall | W. | 1932 | Zurich | Geometry |
| Thurston | W. P. | 1978 | Helsinki | Plenary |
| Thurston | William | 1974 | Vancouver | Algebraic & Differential Topology |
| Tian | Gang | 1990 | Kyoto | Geometry |
| Tian | Gang | 2002 | Beijing | Plenary |
| Tian | Ye | 2022 | Virtual | Number Theory |
| Tiep | Pham Huu | 2018 | Rio de Janeiro | Algebra |
| Tiercy | G. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Tiercy | Georges | 1932 | Zurich | Mathematical-technical sciences and astronomy |
| Tihonov | A. N. | 1966 | Moskva | Numerical mathematics |
| Tijdeman | R. | 1978 | Helsinki | Number Theory |
| Tikhomandritzky | M. | 1900 | Paris | Analysis |
| Tikhomirov | Konstantin | 2022 | Virtual | Analysis, Combinatorics |
| Tillmann | Ulrike | 2002 | Beijing | Topology |
| Timoshenko | S. | 1928 | Bologna | Engineering and Industrial Applications |