| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Drach | Jules | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Drach | Jules | 1920 | Strasbourg | Geometry |
| Drach | Jules | 1932 | Zurich | Analysis |
| Drach | Jules | 1936 | Oslo | Analysis |
| Chuzhoy | Julia | 2014 | Seoul | Mathematical Aspects of Computer Science |
| Boettcher | Julia | 2022 | Virtual | Combinatorics |
| Dubedat | Julien | 2022 | Virtual | Probability |
| Rey-Pastor | Julio | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Wolff | Julius | 1932 | Zurich | Analysis |
| Shaneson | Julius L. | 1994 | Zurich | Topology |
| Li | Jun | 1994 | Zurich | Geometry |
| Hwang | Jun-Muk | 2006 | Madrid | Algebraic and Complex Geometry |
| Hwang | Jun-Muk | 2014 | Seoul | Plenary |
| Wei | Juncheng | 2014 | Seoul | Partial Differential Equations |
| Huh | June | 2018 | Rio de Janeiro | Combinatorics |
| Barrow-Green | June | 2022 | Virtual | History of Mathematics |
| Huh | June | 2022 | Virtual | Plenary/Prize winner |
| Chen | Jungkai | 2018 | Rio de Janeiro | Algebraic and Complex Geometry |
| Fröhlich | Jürg | 1986 | Berkeley | Plenary |
| Fröhlich | Jürg | 1994 | Zurich | Plenary |
| Moser | Jürgen | 1962 | Stockholm | Applied Mathematics, Mathematical Physics & Numerical Analysis |
| Moser | Jürgen | 1978 | Helsinki | Complex Analysis |
| Moser | Jürgen | 1998 | Berlin | Plenary |
| Moore | Justin Tatch | 2010 | Hyderabad | Logic |
| Borsuk | K. | 1954 | Amsterdam | Plenary |