| Last Name | First Name | Year | City Sort ascending | Section/Speaker Type |
|---|---|---|---|---|
| Le Cam | Lucien M. | 1990 | Kyoto | Probability & Mathematical Statistics |
| Lebeau | Gilles | 1990 | Kyoto | Partial Differential Equations |
| Lin | Fang Hua | 1990 | Kyoto | Partial Differential Equations |
| Lions | Pierre-Louis | 1990 | Kyoto | Partial Differential Equations |
| Lovász | László | 1990 | Kyoto | Plenary |
| Lusztig | George | 1990 | Kyoto | Plenary |
| Lützen | Jesper | 1990 | Kyoto | History, Teaching & Nature of Mathmatics |
| Majda | Andrew J. | 1990 | Kyoto | Plenary |
| Manin | Yuri Ivanovich | 1990 | Kyoto | History, Teaching & Nature of Mathmatics |
| Margulis | Grigorii A. | 1990 | Kyoto | Plenary |
| Mathieu | Oliver | 1990 | Kyoto | Lie Groups & Representation |
| Matsuki | Toshihiko | 1990 | Kyoto | Lie Groups & Representation |
| McDuff | Dusa | 1990 | Kyoto | Geometry |
| McMullen | Curt | 1990 | Kyoto | Real & Complex Analysis |
| Melrose | Richard B. | 1990 | Kyoto | Plenary |
| Meyer | Yves F. | 1990 | Kyoto | Applications of Mathematics to the Sciences |
| Millson | John J. | 1990 | Kyoto | Geometry |
| Mimura | Masayasu | 1990 | Kyoto | Applications of Mathematics to the Sciences |
| Mœglin | Colette | 1990 | Kyoto | Lie Groups & Representation |
| Molchanov | Stanislav A. | 1990 | Kyoto | Probability & Mathematical Statistics |
| Mori | Masatake | 1990 | Kyoto | Computational Methods |
| Mori | Shigefumi | 1990 | Kyoto | Plenary/Prize winner |
| Morita | Shigeyuki | 1990 | Kyoto | Topology |
| Moscovici | Henri | 1990 | Kyoto | Topology |
| Murai | Takafumi | 1990 | Kyoto | Real & Complex Analysis |