| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Viazovska | Maryna | 2022 | Virtual | Plenary/Prize winner |
| Inoue | Masahisa | 1974 | Vancouver | Algebraic Geometry |
| Izumi | Masaki | 2010 | Hyderabad | Functional Analysis and Applications |
| Kashiwara | Masaki | 1990 | Kyoto | Lie Groups & Representation |
| Kashiwara | Masaki | 2018 | Rio de Janeiro | Chern Medal Award Lecture |
| Takesaki | Masamichi | 1970 | Nice | Analysis |
| Kuranishi | Masatake | 1970 | Nice | Geometry & Topology |
| Mori | Masatake | 1990 | Kyoto | Computational Methods |
| Tsujii | Masato | 2014 | Seoul | Dynamical Systems and Ordinary Differential Equations |
| Mimura | Masayasu | 1990 | Kyoto | Applications of Mathematics to the Sciences |
| Gubinelli | Massimiliano | 2018 | Rio de Janeiro | Partial Differential Equations, Probability and Statistics |
| Schacht | Mathias | 2022 | Virtual | Combinatorics |
| Lewin | Mathieu | 2022 | Virtual | Partial Differential Equations |
| Marcolli | Matilde | 2010 | Hyderabad | Mathematical Physics |
| Fujiwara | Matsusaburo | 1936 | Oslo | Algebra and Number Theory |
| Emerton | Matthew | 2014 | Seoul | Number Theory |
| Foreman | Matthew | 1998 | Berlin | Logic |
| Gursky | Matthew | 2006 | Madrid | Partial Differential Equations |
| Hastings | Matthew | 2022 | Virtual | Mathematical Physics |
| Günther | Matthias | 1990 | Kyoto | Partial Differential Equations |
| Aschenbrenner | Matthias | 2018 | Rio de Janeiro | Logic and Foundations |
| Lassas | Matti | 2018 | Rio de Janeiro | Control Theory and Optimization |
| d'Ocagne | Maurice | 1900 | Paris | History and Math Education |
| Fréchet | Maurice | 1924 | Toronto | Statistics, Actuarial Science, Economics |
| Fréchet | Maurice | 1928 | Bologna | Plenary |