| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Siddiqi | Raziuddin | 1936 | Oslo | Analysis |
| Sidlovskii | A. B. | 1966 | Moskva | Theory of numbers |
| Sidoravicius | Vladas | 2014 | Seoul | Probability and Statistics |
| Siebenmann | L. | 1970 | Nice | Geometry & Topology |
| Siebert | Bernd | 2014 | Seoul | Algebraic and Complex Geometry |
| Siegel | Alan | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Siegel | Carl Ludwig | 1936 | Oslo | Plenary |
| Siegmund | David | 1998 | Berlin | Prob & Stats |
| Siegmund-Schultze | Reinhard | 2014 | Seoul | History of Mathematics |
| Sierpinski | W, | 1928 | Bologna | Analysis |
| Sierpinski | W. | 1924 | Toronto | Algebra, Theory of Numbers, Analysis |
| Sierpinski | Waclaw | 1932 | Zurich | Plenary |
| Sierpinski | Waclaw | 1936 | Oslo | Analysis |
| Sigal | I. M. | 1990 | Kyoto | Mathematical Physics |
| Sigmund | Karl | 1998 | Berlin | Plenary |
| Silberstein | L. | 1912 | Cambridge | Arithmetic, Algebra, Analysis |
| Silberstein | L. | 1912 | Cambridge | Mechanics, Physical Mathematics, Astronomy |
| Silberstein | Ludwik | 1924 | Toronto | Mechanics, Physics, Astronomy, Geophysics |
| Silla | L. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Silov | G. E. | 1962 | Stockholm | Analysis |
| Silver | David | 2022 | Virtual | Special Sectional Lecture |
| Silver | Jack | 1974 | Vancouver | Mathematical Logic and the Foundations of Mathematics |
| Silverman | Joseph | 2022 | Virtual | Special Sectional Lecture |
| Silvermann | L. L. | 1928 | Bologna | Analysis |
| Silvestre | Luis | 2014 | Seoul | Partial Differential Equations |