| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Yano | K. | 1954 | Amsterdam | Geometry & Topology |
| Yosida | K. | 1954 | Amsterdam | Plenary |
| Zarankiewicz | K. | 1936 | Oslo | Geometry and Topology |
| Zindler | K. | 1904 | Heidelberg | Geometry |
| Ribet | K. A. | 1983 | Warszawa | Number Theory |
| Elworthy | K. D. | 1970 | Nice | Geometry & Topology |
| Roth | K. F. | 1958 | Edinburgh | Plenary/Prize winner |
| Hagstroem | K. G. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Barwise | K. Jon | 1974 | Vancouver | Mathematical Logic and the Foundations of Mathematics |
| Uhlenbeck | K. K. | 1983 | Warszawa | Geometry |
| Chung | K. L. | 1958 | Edinburgh | Probability & Statistics |
| Parthasarathy | K. R. | 1994 | Zurich | Prob & Stats |
| Brown | K. S. | 1978 | Helsinki | Algebra |
| Hirsch | K.A. | 1950 | Cambridge (USA) | |
| Behrend | Kai | 2014 | Seoul | Algebraic and Complex Geometry |
| Cieliebak | Kai | 2022 | Virtual | Geometry, Topology |
| Chung | Kai Lai | 1970 | Nice | Analysis |
| Matomäki | Kaisa | 2018 | Rio de Janeiro | Number Theory |
| Takasaki | Kanehisa | 1990 | Kyoto | Partial Differential Equations |
| Soundararajan | Kannan | 2010 | Hyderabad | Number Theory |
| Soundararajan | Kannan | 2022 | Virtual | Plenary Lecture |
| Ono | Kaoru | 2006 | Madrid | Topology |
| Dusl | Karel | 1932 | Zurich | Analysis |
| Dusl | Karel | 1936 | Oslo | Analysis |
| Smith | Karen | 2014 | Seoul | Algebra, Algebraic and Complex Geometry |