| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Fenchel | Werner | 1936 | Oslo | Geometry and Topology |
| Niziol | Wieslawa | 2006 | Madrid | Number Theory |
| Blaschke | Wilhelm | 1936 | Oslo | Geometry and Topology |
| Maier | Wilhelm | 1932 | Zurich | Analysis |
| Müller | Wilhelm | 1932 | Zurich | Mechanics and Mathematical Physics |
| Schlag | Wilhelm | 2014 | Seoul | Analysis and its Applications, Partial Differential Equations |
| Winter | Wilhelm | 2018 | Rio de Janeiro | Analysis and Operator Algebras |
| Browder | William | 1966 | Moskva | Topology |
| Browder | William | 1970 | Nice | Plenary |
| Cook | William | 1998 | Berlin | Control Theory & Optimization |
| Crawley-Boevey | William | 2006 | Madrid | Algebra |
| Goldman | William | 2010 | Hyderabad | Geometry |
| Kantor | William | 1998 | Berlin | Algebra |
| Parry | William | 1970 | Nice | Analysis |
| Schmidt | William | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Thurston | William | 1974 | Vancouver | Algebraic & Differential Topology |
| Johnson | William | 2018 | Rio de Janeiro | Analysis and Operator Algebras |
| Firey | William J. | 1974 | Vancouver | Geometry |
| Allard | William K. | 1974 | Vancouver | Partial Differential Equations |
| Kahan | William M. | 1990 | Kyoto | Computational Methods |
| Minicozzi | William P. | 2006 | Madrid | Geometry |
| Pulleyblank | William R. | 1998 | Berlin | Control Theory & Optimization |
| Feller | Willy | 1936 | Oslo | Probability Calculus, Mathematical Statistics, Insurance Mathematics, and Econometry |
| Scharlau | Winfried | 1974 | Vancouver | Algebra |
| Stekloff | Wladimir | 1924 | Toronto | Mechanics, Physics, Astronomy, Geophysics |