| Last Name Sort descending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Riabouchinsky | D. | 1928 | Bologna | Philosophy, History of Mathematics |
| Riabouchinsky | D. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Ribet | K. A. | 1983 | Warszawa | Number Theory |
| Ricci | Carlo Luigi | 1932 | Zurich | Mechanics and Mathematical Physics |
| Ricci | G. | 1924 | Toronto | Geometry |
| Ricci | Giovanni | 1932 | Zurich | Geometry |
| Rickard | Jeremy | 1998 | Berlin | Algebra |
| Rider | Daniel | 1970 | Nice | Analysis |
| Rider | P.R. | 1924 | Toronto | Statistics, Actuarial Science, Economics |
| Rider | Paul R. | 1936 | Oslo | Probability Calculus, Mathematical Statistics, Insurance Mathematics, and Econometry |
| Riebesell | P. | 1932 | Zurich | Probability calculus, insurance mathematics, and statistics |
| Riebesell | P. | 1936 | Oslo | Probability Calculus, Mathematical Statistics, Insurance Mathematics, and Econometry |
| Riesz | F. | 1908 | Rome | Arithmetic, Algebra, Analysis |
| Riesz | F. | 1928 | Bologna | Analysis |
| Riesz | Frédéric | 1932 | Zurich | Plenary |
| Riesz | Marcel | 1936 | Oslo | Algebra and Number Theory |
| Riesz | Marcel | 1936 | Oslo | Analysis |
| Rietz | H.L. | 1924 | Toronto | Statistics, Actuarial Science, Economics |
| Ringel | C. M. | 1983 | Warszawa | Algebra |
| Ringrose | J. R. | 1974 | Vancouver | Operator Algebras, Harmonic Analysis & Representation of Groups |
| Ringström | Hans | 2014 | Seoul | Geometry |
| Rinzel | J. | 1986 | Berkeley | Applications of Mathematics to Nonphysical Sciences |
| Riordan | Oliver | 2010 | Hyderabad | Combinatorics |
| Rips | E. | 1994 | Zurich | Topology |
| Risser | R. | 1924 | Toronto | Mechanics, Physics, Astronomy, Geophysics |