| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Riabouchinski | D. | 1920 | Strasbourg | Mechanics, Physical Mathematics, Astronomy |
| Rezk | Charles | 2014 | Seoul | Topology |
| Reymond | Arnold | 1932 | Zurich | Philosophy and History |
| Reye | Th. | 1897 | Zurich | Geometry |
| Rey-Pastor | Julio | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Rey Pastor | J. | 1928 | Bologna | Analysis |
| Revesz | P. | 1978 | Helsinki | Prob & Stats |
| Reuschle | C. | 1897 | Zurich | Arithmetic and Algebra |
| Ressayre | Nicolas | 2014 | Seoul | Lie Theory and Generalizations |
| Reshetikhin | Nicolai | 1990 | Kyoto | Mathematical Physics |
| Reshetikhin | Nicolai | 2010 | Hyderabad | Plenary |
| Rényi | A. | 1958 | Edinburgh | Probability & Statistics |
| Renegar | James | 1990 | Kyoto | Computational Methods |
| Rémy | Bertrand | 2014 | Seoul | Lie Theory and Generalizations |
| Remoundos | G. | 1908 | Rome | Arithmetic, Algebra, Analysis |
| Rémoundos | G. | 1912 | Cambridge | Arithmetic, Algebra, Analysis |
| Remoundos | G. | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Remmert | R. | 1966 | Moskva | 1/2 hr. report |
| Remenik | Daniel | 2022 | Virtual | Probability |
| Rellich | F. | 1950 | Cambridge (USA) | Mathematical Physics & Applied Mathematics |
| Rellich | F. | 1954 | Amsterdam | Mathematical Physics & Applied Mathematics |
| Rellich | Franz | 1932 | Zurich | Analysis |
| Rella | T. | 1936 | Oslo | Algebra and Number Theory |
| Reiten | Idun | 1998 | Berlin | Algebra |
| Reiten | Idun | 2010 | Hyderabad | ICM Emmy Noether Lecture |