| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Rao | C. Radhakrishna | 1974 | Vancouver | Probability & Mathematical Statistics, Potential, Measure & Integration |
| Rannacher | R. | 2002 | Beijing | Numerical Analysis & Scientific Computing |
| Rannacher | Rolf | 1998 | Berlin | Applications |
| Randal-Williams | Oscar | 2022 | Virtual | Topology |
| Ramasubramanian | Krishnamurthi | 2022 | Virtual | History of Mathematics |
| Ramanan | Kavita | 2022 | Virtual | Probability |
| Ramanan | S. | 1978 | Helsinki | Algebraic Geometry |
| Raman | C.V. | 1924 | Toronto | Mechanics, Physics, Astronomy, Geophysics |
| Ralston | Anthony | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Rallis | Stephen | 1990 | Kyoto | Lie Groups & Representation |
| Rains | Eric | 2010 | Hyderabad | Combinatorics |
| Rainich | G. Y. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Rainich | G. Y. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Raimondi | E. | 1928 | Bologna | Engineering and Industrial Applications |
| Raghunathan | M. S. | 1970 | Nice | Geometry & Topology |
| Raghavendra | Prasad | 2018 | Rio de Janeiro | Mathematical Aspects of Computer Science |
| Rafael | H. | 1932 | Zurich | Algebra and Number Theory |
| Rafael | H. | 1936 | Oslo | Geometry and Topology |
| Radziwill | Maksym | 2018 | Rio de Janeiro | Number Theory |
| Rados | G. | 1908 | Rome | Geometry |
| Rados | Gustav | 1897 | Zurich | Arithmetic and Algebra |
| Rado | Richard | 1936 | Oslo | Algebra and Number Theory |
| Rado | Richard | 1974 | Vancouver | Discrete Mathematics & Theory of Computation |
| Radó | T. | 1928 | Bologna | Analysis |
| Radl | Fr. | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |