| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Kiepert | L. | 1932 | Zurich | Algebra and Number Theory |
| Laboccetta | L. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Laboccetta | L. | 1928 | Bologna | Geometry |
| Laboccetta | L. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Laboccetta | L. | 1932 | Zurich | Analysis |
| Lafforgue | L. | 1998 | Berlin | Lie Groups |
| Leau | L. | 1900 | Paris | History and Math Education |
| Lempert | L. | 1986 | Berkeley | Complex Analysis |
| Lichtenstein | L. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Locher | L. | 1936 | Oslo | Logic, Philosophy, and History |
| Locher | L. | 1936 | Oslo | Geometry and Topology |
| Luiggi | L. | 1908 | Rome | Various Applications of Mathematics |
| Lusternik | L. | 1928 | Bologna | Geometry |
| Maillard | L. | 1920 | Strasbourg | Mechanics, Physical Mathematics, Astronomy |
| Malavard | L. | 1932 | Zurich | Mechanics and Mathematical Physics |
| March | L. | 1908 | Rome | Various Applications of Mathematics |
| March | L. | 1924 | Toronto | Statistics, Actuarial Science, Economics |
| March | L. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Marchis | L. | 1924 | Toronto | Engineering |
| Michel | L. | 1966 | Moskva | Applied mathematics & mathematical physics |
| Muzzioli | L. | 1928 | Bologna | Engineering and Industrial Applications |
| Nachbin | L. | 1962 | Stockholm | Analysis |
| Nikliborc | L. | 1928 | Bologna | Analysis |
| Nirenberg | L. | 1962 | Stockholm | Plenary |
| Nirenberg | L. | 1974 | Vancouver | Partial Differential Equations |