| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Rutishauser | H. | 1958 | Edinburgh | Applied Mathematics, Mathematical Physics & Numerical Analysis |
| Ruse | H. S. | 1936 | Oslo | Mathematical Physics, Astronomy and Geophysics |
| Runge | C. | 1912 | Cambridge | Didactics |
| Ruh | E. A. | 1986 | Berkeley | Geometry |
| Ruelle | D. | 1983 | Warszawa | Plenary |
| Rudolph | Daniel J. | 2002 | Beijing | Ordinary Differential Equations & Dynamical Systems |
| Rudnick | Zeev | 2014 | Seoul | Number Theory, Analysis and its Applications |
| Rudio | F. | 1912 | Cambridge | Philosophy and History |
| Rudin | Mary Allen | 1974 | Vancouver | General Topology, Real & Functional Analysis |
| Rudin | Walter | 1970 | Nice | Analysis |
| Rudelson | Mark | 2010 | Hyderabad | Functional Analysis and Applications |
| Rudakov | Alexei N. | 1994 | Zurich | Algebraic Geometry |
| Rubinstein | Joachim H. | 1994 | Zurich | Topology |
| Rubinfeld | Ronitt | 2006 | Madrid | Mathematical Aspects of Computer Science |
| Rubin | Karl | 2002 | Beijing | Number Theory |
| Ruan | Yongbin | 1998 | Berlin | Differential Geometry and Global Analysis |
| Rozenberg | G. | 1978 | Helsinki | Discrete Math & math Aspects of Computer Science |
| Royden | H. L. | 1974 | Vancouver | Complex Analysis |
| Roy | R. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Roy | S. N. | 1950 | Cambridge (USA) | Prob & Stats |
| Rowe | C. H. | 1932 | Zurich | Geometry |
| Rowe | David | 2018 | Rio de Janeiro | History of Mathematics |
| Rourke | C. P. | 1970 | Nice | Geometry & Topology |
| Rouquier | Raphael | 2006 | Madrid | Algebra |
| Roughgarden | Tim | 2006 | Madrid | Mathematical Aspects of Computer Science |