| Last Name | First Name | Year | City Sort descending | Section/Speaker Type |
|---|---|---|---|---|
| Ratner | Marina | 1994 | Zurich | Plenary |
| Rellich | Franz | 1932 | Zurich | Analysis |
| Reuschle | C. | 1897 | Zurich | Arithmetic and Algebra |
| Reye | Th. | 1897 | Zurich | Geometry |
| Reymond | Arnold | 1932 | Zurich | Philosophy and History |
| Riabouchinsky | D. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Ricci | Carlo Luigi | 1932 | Zurich | Mechanics and Mathematical Physics |
| Ricci | Giovanni | 1932 | Zurich | Geometry |
| Riebesell | P. | 1932 | Zurich | Probability calculus, insurance mathematics, and statistics |
| Riesz | Frédéric | 1932 | Zurich | Plenary |
| Rips | E. | 1994 | Zurich | Topology |
| Risser | R. | 1932 | Zurich | Probability calculus, insurance mathematics, and statistics |
| Robert | Raoul | 1994 | Zurich | Applications of Mathematics in the Sciences |
| Rokhlin | Vladimir | 1994 | Zurich | Numerical Analysis & Scientific Computing |
| Romanovsky | V. | 1932 | Zurich | Probability calculus, insurance mathematics, and statistics |
| Rosenblatt | Alfred | 1932 | Zurich | Mechanics and Mathematical Physics |
| Rowe | C. H. | 1932 | Zurich | Geometry |
| Rubinstein | Joachim H. | 1994 | Zurich | Topology |
| Rudakov | Alexei N. | 1994 | Zurich | Algebraic Geometry |
| Salamon | Dietmar | 1994 | Zurich | Geometry |
| Sanz-Serna | J. M. | 1994 | Zurich | Numerical Analysis & Scientific Computing |
| Schieldrop | Edgar B. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Schlichting | H. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Schmidt | Harry | 1932 | Zurich | Mathematical-technical sciences and astronomy |
| Schneider | Joel | 1994 | Zurich | Teaching & Popularization of Mathematics |