| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Lasota | A. | 1983 | Warszawa | Ord. diff. equations & dynamical systems |
| Lassas | Matti | 2018 | Rio de Janeiro | Control Theory and Optimization |
| Lasserre | Jean | 2018 | Rio de Janeiro | Control Theory and Optimization |
| Last | Yoram | 2010 | Hyderabad | Mathematical Physics |
| Latala | R. | 2002 | Beijing | Operator Algebras & Functional Analysis |
| Laumon | Gérard | 1990 | Kyoto | Number Theory |
| Laumon | Gérard | 2006 | Madrid | Number Theory |
| Laurent | Monique | 2014 | Seoul | Control Theory and Optimization |
| Lauricella | G. | 1908 | Rome | Mechanics, Physical Mathematics, Astronomy |
| Lavrentieff | M. | 1928 | Bologna | Analysis |
| Lawler | G. | 2002 | Beijing | Prob & Stats |
| Lawler | Gregory | 2018 | Rio de Janeiro | Plenary |
| Lawson | H. Blaine | 1974 | Vancouver | Differential Geometry & Analysis on Manifolds |
| Lawson | H. Blaine | 1994 | Zurich | Topology |
| Lawvere | F. W. | 1970 | Nice | Algebra |
| Lax | P. D. | 1966 | Moskva | Applied mathematics & mathematical physics |
| Lax | P. D. | 1983 | Warszawa | Plenary |
| Lax | Peter D. | 1970 | Nice | Analysis |
| Lazarsfeld | Robert K. | 1990 | Kyoto | Algebraic Geometry |
| Le Bris | Claude | 2006 | Madrid | Applications of Mathematics in the Sciences |
| Le Calvez | Patrice | 2006 | Madrid | Ordinary Differential Equations and Dynamical Systems |
| Le Cam | Lucien M. | 1990 | Kyoto | Probability & Mathematical Statistics |
| Le Gall | Jean-Francois | 1998 | Berlin | Prob & Stats |
| Le Gall | Jean-François | 2014 | Seoul | Plenary |
| Le Jan | Yves | 2006 | Madrid | Probability and Statistics |