| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Siu | Yum-Tong | 1983 | Warszawa | Plenary |
| Siu | Yum-Tong | 2002 | Beijing | Plenary |
| Kifer | Yuri | 1998 | Berlin | Ordinary Differential Equations & Dynamical Systems |
| Nesterenko | Yuri | 1990 | Kyoto | Number Theory |
| Tschinkel | Yuri | 2006 | Madrid | Algebraic and Complex Geometry |
| Prokhorov | Yuri | 2022 | Virtual | Algebraic and Complex Geometry |
| Manin | Yuri Ivanovich | 1990 | Kyoto | History, Teaching & Nature of Mathmatics |
| Nesterov | Yurii | 2010 | Hyderabad | Control Theory & Optimization |
| Grabovsky | Yury | 1998 | Berlin | Applications |
| Peres | Yuval | 2002 | Beijing | Prob & Stats |
| Martel | Yvan | 2018 | Rio de Janeiro | Partial Differential Equations |
| Benoist | Yves | 2014 | Seoul | Lie Theory and Generalizations, Dynamical Systems and Ordinary Differential Equations |
| Le Jan | Yves | 2006 | Madrid | Probability and Statistics |
| Meyer | Yves | 1970 | Nice | Analysis |
| André | Yves | 2018 | Rio de Janeiro | Number Theory |
| Meyer | Yves F. | 1990 | Kyoto | Applications of Mathematics to the Sciences |
| Maday | Yvon | 2006 | Madrid | Numerical Analysis and Scientific Computing |
| Choquet-Bruhat | Yvonne | 2006 | Madrid | ICM Emmy Noether Lecture |
| Ciesielski | Z. | 1974 | Vancouver | General Topology, Real & Functional Analysis |
| Hedrlín | Z. | 1970 | Nice | Algebra |
| Horák | Z. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Horák | Z. | 1936 | Oslo | Mathematical Physics, Astronomy and Geophysics |
| Janiszewski | Z. | 1912 | Cambridge | Geometry |
| Semadeni | Z. | 1986 | Berkeley | Teaching of Mathmatics |
| Galdeano | Z. de | 1897 | Zurich | Analysis and Function Theory |