| Last Name | First Name | Year | City Sort ascending | Section/Speaker Type |
|---|---|---|---|---|
| Kourensky | M. | 1932 | Zurich | Analysis |
| Krall | G. | 1932 | Zurich | Mathematical-technical sciences and astronomy |
| Krawtchouk | Michel | 1932 | Zurich | Analysis |
| Krebs | H. | 1932 | Zurich | Geometry |
| Krull | W. | 1932 | Zurich | Algebra and Number Theory |
| Kryloff | Nicolas | 1932 | Zurich | Mechanics and Mathematical Physics |
| Kuratowski | Casimir | 1932 | Zurich | Analysis |
| Laboccetta | L. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Laboccetta | L. | 1932 | Zurich | Analysis |
| Ladyzhenskaya | Olga | 1994 | Zurich | ICM Emmy Noether Lecture |
| Lannes | Jean | 1994 | Zurich | Topology |
| Lawson | H. Blaine | 1994 | Zurich | Topology |
| Le Roux | J. | 1932 | Zurich | Analysis |
| LeBrun | Claude | 1994 | Zurich | Geometry |
| Ledrappier | Francois | 1994 | Zurich | Ord. Diff. Equations |
| Leighton | Tom | 1994 | Zurich | Mathematical Aspects of Computer Science |
| Leja | F. | 1932 | Zurich | Analysis |
| Lense | Josef | 1932 | Zurich | Analysis |
| Levin | Leonid | 1994 | Zurich | Mathematical Aspects of Computer Science |
| Lévy | Paul | 1932 | Zurich | Analysis |
| Li | Jian-Shu | 1994 | Zurich | Lie Groups |
| Li | Jun | 1994 | Zurich | Geometry |
| Lieb | Elliot H. | 1994 | Zurich | Mathematical Physics |
| Linfoot | E. H. | 1932 | Zurich | Algebra and Number Theory |
| Lions | Pierre-Louis | 1994 | Zurich | Plenary/Prize winner |