| Last Name | First Name | Year | City Sort descending | Section/Speaker Type |
|---|---|---|---|---|
| Schinzel | A. | 1970 | Nice | Algebra |
| Schmidt | Wolfgang M. | 1970 | Nice | Algebra |
| Seeley | R. | 1970 | Nice | Analysis |
| Segal | G. B. | 1970 | Nice | Geometry & Topology |
| Segal | I. E. | 1970 | Nice | Analysis |
| Serrin | James | 1970 | Nice | Analysis |
| Seshadri | C. S. | 1970 | Nice | Algebra |
| Shafarevitch | I. R. | 1970 | Nice | Algebra |
| Shimura | Goro | 1970 | Nice | Geometry & Topology |
| Shiryayev | A. N. | 1970 | Nice | Analysis |
| Siebenmann | L. | 1970 | Nice | Geometry & Topology |
| Sinai | J. G. | 1970 | Nice | Analysis |
| Sion | Maurice | 1970 | Nice | Analysis |
| Spencer | D. C. | 1970 | Nice | Geometry & Topology |
| Sprindžuk | V. G. | 1970 | Nice | Algebra |
| Stallings | J. R. | 1970 | Nice | Geometry & Topology |
| Stampacchia | Guido | 1970 | Nice | Analysis |
| Stark | H. M. | 1970 | Nice | Algebra |
| Stein | E. M. | 1970 | Nice | Plenary |
| Stepin | A. M. | 1970 | Nice | Analysis |
| Sullivan | Dennis | 1970 | Nice | Geometry & Topology |
| Suzuki | Michio | 1970 | Nice | Algebra |
| Swan | Richard G. | 1970 | Nice | Plenary |
| Takesaki | Masamichi | 1970 | Nice | Analysis |
| Tate | John | 1970 | Nice | Plenary |