| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Skinner | Christopher | 2006 | Madrid | Number Theory |
| Skoda | H. | 1978 | Helsinki | Complex Analysis |
| Skolem | Th. | 1936 | Oslo | Logic, Philosophy, and History |
| Skolem | Th. | 1950 | Cambridge (USA) | Logic & Philosophy |
| Skorokhod | A. V. | 1986 | Berkeley | Plenary |
| Slade | Gordon | 1994 | Zurich | Mathematical Physics |
| Slaman | Theodore A. | 1990 | Kyoto | Mathematical Logic & Foundations |
| Slavnov | Andrey | 1974 | Vancouver | Invited (lecture was not given) |
| Slisenko | A. O. | 1983 | Warszawa | Mathematical logic & foundations of mathematics |
| Sloane | N. J. A. | 1998 | Berlin | Combinatorics |
| Slutsky | E. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Sly | Allan | 2018 | Rio de Janeiro | Probability and Statistics |
| Smale | S. | 1962 | Stockholm | Topology & Differential Geometry |
| Smale | S. | 1966 | Moskva | Plenary/Prize winner |
| Smale | S. | 1986 | Berkeley | Plenary |
| Smart | Charles | 2022 | Virtual | Partial Differential Equations |
| Smillie | J. | 2002 | Beijing | Ordinary Differential Equations & Dynamical Systems |
| Smirnoff | W.J. | 1924 | Toronto | Algebra, Theory of Numbers, Analysis |
| Smirnov | Feodor A. | 1998 | Berlin | Mathematical Physics |
| Smirnov | Ju. | 1962 | Stockholm | Topology & Differential Geometry |
| Smirnov | Stanislav | 2006 | Madrid | Analysis |
| Smirnov | Stanislav | 2010 | Hyderabad | Plenary/Prize winner |
| Smith | D.E. | 1912 | Cambridge | Didactics |
| Smith | D.T. | 1908 | Rome | Philosophy, History, and Didactics |
| Smith | David A. | 1998 | Berlin | Teaching & Popularization of Mathematics |