| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Le Roux | 1920 | Strasbourg | Geometry | |
| Le Roux | J. | 1924 | Toronto | Plenary |
| Le Roux | J. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Le Roux | J. | 1932 | Zurich | Analysis |
| Le Roux | P. | 1936 | Oslo | Rational and Applied Mechanics |
| Leau | L. | 1900 | Paris | History and Math Education |
| Lebeau | Gilles | 1990 | Kyoto | Partial Differential Equations |
| LeBrun | Claude | 1994 | Zurich | Geometry |
| Leclerc | Bernard | 2010 | Hyderabad | Combinatorics |
| Ledoux | Michel | 2014 | Seoul | Probability and Statistics |
| Ledrappier | Francois | 1994 | Zurich | Ord. Diff. Equations |
| Lee | Ki-Ahm | 2014 | Seoul | Partial Differential Equations |
| Lee | Pengyee | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Lefschetz | S. | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Lehfeldt | R.A. | 1912 | Cambridge | Economics, Actuarial Science, Statistics |
| Lehmer | D. H. | 1958 | Edinburgh | Applied Mathematics, Mathematical Physics & Numerical Analysis |
| Lehto | O. | 1966 | Moskva | Classical analysis |
| Leighton | Tom | 1994 | Zurich | Mathematical Aspects of Computer Science |
| Leja | F. | 1928 | Bologna | Analysis |
| Leja | F. | 1932 | Zurich | Analysis |
| Leja | F. | 1936 | Oslo | Analysis |
| Lelli | M. | 1928 | Bologna | Engineering and Industrial Applications |
| Lelong-Ferrand | J. | 1974 | Vancouver | Differential Geometry & Analysis on Manifolds |
| Lemaitre | Georges | 1936 | Oslo | Mathematical Physics, Astronomy and Geophysics |
| Lemanczyk | Mariusz | 2022 | Virtual | Dynamics |