| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Gowers | Timothy | 1998 | Berlin | Plenary/Prize winner |
| Kjeldsen | TinneHoff | 2010 | Hyderabad | History of Mathematics |
| Ekholm | Tobias | 2018 | Rio de Janeiro | Geometry, Topology |
| Colding | Tobias H. | 1998 | Berlin | Differential Geometry and Global Analysis |
| Colding | Tobias Holck | 2022 | Virtual | Plenary Lecture |
| Bridgeland | Tom | 2006 | Madrid | Algebraic and Complex Geometry |
| Graber | Tom | 2006 | Madrid | Algebraic and Complex Geometry |
| Leighton | Tom | 1994 | Zurich | Mathematical Aspects of Computer Science |
| Romberg | Tom | 2002 | Beijing | Mathematics Education & Popularization of Mathematics |
| Sanders | Tom | 2014 | Seoul | Analysis and its Applications, Combinatorics |
| Luczak | Tomasz | 2006 | Madrid | Combinatorics |
| Mrowka | Tomasz | 2018 | Rio de Janeiro | Plenary |
| Mrowka | Tomasz S. | 1994 | Zurich | Geometry |
| Kubota | Tomio | 1970 | Nice | Algebra |
| Terasoma | Tomohide | 2006 | Madrid | Algebraic and Complex Geometry |
| Ohtsuki | Tomotada | 1998 | Berlin | Topology |
| Arakawa | Tomoyuki | 2018 | Rio de Janeiro | Lie Theory and Generalizations |
| Pitassi | Toniann | 1998 | Berlin | Mathematical Aspects of Computer Science |
| Carleman | Torsten | 1932 | Zurich | Plenary |
| Matsuki | Toshihiko | 1990 | Kyoto | Lie Groups & Representation |
| Sunada | Toshikazu | 1990 | Kyoto | Geometry |
| Mabuchi | Toshiki | 2006 | Madrid | Geometry |
| Kato | Tosio | 1970 | Nice | Plenary |
| Wooley | Trevor | 2014 | Seoul | Number Theory |
| Riviere | Tristan Joel | 2002 | Beijing | Part. Diff. Equations |