| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Schoen | R. | 1986 | Berkeley | Plenary |
| Seeley | R. | 1970 | Nice | Analysis |
| Steinberg | R. | 1966 | Moskva | Algebra |
| Suppantschitsch | R. | 1908 | Rome | Philosophy, History, and Didactics |
| Suppantschitsch | R. | 1912 | Cambridge | Philosophy, History, and Didactics |
| Tambs Lyche | R. | 1928 | Bologna | Analysis |
| Tambs Lyche | R. | 1936 | Oslo | Analysis |
| Taucer | R. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Thom | R. | 1958 | Edinburgh | Plenary/Prize winner |
| Thom | R. | 1970 | Nice | Geometry & Topology |
| Thom | R. | 1983 | Warszawa | Plenary |
| Tijdeman | R. | 1978 | Helsinki | Number Theory |
| Vaidyanathaswamy | R. | 1928 | Bologna | Analysis |
| Vicomte | R. | 1912 | Cambridge | Philosophy and History |
| Wavre | R. | 1920 | Strasbourg | Arithmetic, Algebra, Analysis |
| Wavre | R. | 1928 | Bologna | Analysis |
| Wavre | R. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Wavre | R. | 1936 | Oslo | Rational and Applied Mechanics |
| Weitzenbock | R. | 1912 | Cambridge | Geometry |
| Zupancic | R. | 1928 | Bologna | Geometry |
| Fairthorne | R. A. | 1936 | Oslo | Pedagogy |
| Fisher | R. A. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Shore | R. A. | 1983 | Warszawa | Mathematical logic & foundations of mathematics |
| Melrose | R. B. | 1978 | Helsinki | Part. Diff. Equations |
| Archibald | R. C. | 1928 | Bologna | Philosophy, History of Mathematics |