| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Tate | John | 1970 | Nice | Plenary |
| Walsh | John | 1974 | Vancouver | Probability & Mathematical Statistics, Potential, Measure & Integration |
| Pardon | John | 2018 | Rio de Janeiro | Topology |
| Friedlander | John B. | 1994 | Zurich | Number Theory |
| Moore | John C. | 1970 | Nice | Algebra |
| Conway | John H. | 1994 | Zurich | Plenary |
| Millson | John J. | 1990 | Kyoto | Geometry |
| Mather | John N. | 1974 | Vancouver | Differential Geometry & Analysis on Manifolds |
| Steel | John R. | 1990 | Kyoto | Mathematical Logic & Foundations |
| Tukey | John W. | 1974 | Vancouver | Applied Statistics, Mathematics in the Social & Biological Sciences |
| Chaika | Jon | 2022 | Virtual | Dynamics |
| Carlson | Jon F. | 1990 | Kyoto | Algebra |
| Kleinberg | Jon M. | 2006 | Madrid | Mathematical Aspects of Computer Science/Prize winner |
| Fjeldstad | Jonas Ekman | 1932 | Zurich | Mechanics and Mathematical Physics |
| Brundan | Jonathan | 2014 | Seoul | Lie Theory and Generalizations |
| Pila | Jonathan | 2014 | Seoul | Plenary |
| Taylor | Jonathan | 2018 | Rio de Janeiro | Probability and Statistics |
| Luk | Jonathan | 2022 | Virtual | Mathematical Physics |
| Keum | JongHae | 2018 | Rio de Janeiro | Algebraic and Complex Geometry |
| Park | Jongil | 2010 | Hyderabad | Topology |
| Lindenstrauss | Joram | 1970 | Nice | Analysis |
| Teschner | Jörg | 2014 | Seoul | Mathematical Physics |
| Nocedal | Jorge | 1998 | Berlin | Control Theory & Optimization |
| van der Hoeven | Joris | 2018 | Rio de Janeiro | Logic and Foundations |
| Lense | Josef | 1932 | Zurich | Analysis |