| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Yau | Horng-Tzer | 1998 | Berlin | Mathematical Physics |
| Yau | S. -T. | 1978 | Helsinki | Plenary |
| Yates | C. E. M. | 1974 | Vancouver | Mathematical Logic and the Foundations of Mathematics |
| Yaschenko | Ivan | 2002 | Beijing | Mathematics Education & Popularization of Mathematics |
| Yano | K. | 1954 | Amsterdam | Geometry & Topology |
| Yan | Jia-An | 2002 | Beijing | Application of Mathematics in the Sciences |
| Yamaguchi | Takao | 2010 | Hyderabad | Geometry |
| Yamage | N. | 1924 | Toronto | Engineering |
| Yakhot | V. | 1986 | Berkeley | Numerical Methods & Computing |
| Yafaev | D. | 1998 | Berlin | Part. Diff. Equations |
| Xu | Chenyang | 2018 | Rio de Janeiro | Algebraic and Complex Geometry |
| Xu | Jinchao | 2010 | Hyderabad | Numerical Analysis and Scientific Computing |
| Xu | Zhouli | 2022 | Virtual | Topology |
| Xu | Zongben | 2010 | Hyderabad | Mathematics in Science and Technology |
| Xin | Zhouping | 2002 | Beijing | Application of Mathematics in the Sciences |
| Xiao | Shutie | 2002 | Beijing | Mathematics Education & Popularization of Mathematics |
| Xia | Zhihong | 1998 | Berlin | Ordinary Differential Equations & Dynamical Systems |
| Wüstholz | G. | 1986 | Berkeley | Number Theory |
| Wundheiler | Alexander | 1932 | Zurich | Mechanics and Mathematical Physics |
| Wu | Hung-Hsi | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Wu | Sijue | 2002 | Beijing | Part. Diff. Equations |
| Wu | Wen-Tsun | 1986 | Berkeley | History of Mathematics |
| Wrinch | Dorothy | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Wrinch | Dorothy | 1932 | Zurich | Analysis |
| Wraith | G. C. | 1978 | Helsinki | Algebra |