| Last Name | First Name Sort descending | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Ekeland | I. | 1978 | Helsinki | Control Theory & Optimization |
| Fredholm | I. | 1900 | Paris | Mechanics |
| Fredholm | I. | 1908 | Rome | Arithmetic, Algebra, Analysis |
| Grojnowski | I. | 2006 | Madrid | Lie Groups and Lie Algebras |
| Lotz | I. | 1932 | Zurich | Mathematical-technical sciences and astronomy |
| Ratib | I. | 1936 | Oslo | Geometry and Topology |
| Barnett | I. A. | 1936 | Oslo | Analysis |
| Ibragimov | I. A. | 1966 | Moskva | 1/2 hr. report |
| Kupka | I. A. K. | 1986 | Berkeley | Ordinary Differential Equations and Dynamic Systems |
| Frenkel | I. B. | 1986 | Berkeley | Lie Groups and Representations |
| Segal | I. E. | 1966 | Moskva | Functional analysis |
| Segal | I. E. | 1970 | Nice | Analysis |
| Bashmakova | I. G. | 1986 | Berkeley | History of Mathematics |
| Macdonald | I. G. | 1970 | Nice | Geometry & Topology |
| Macdonald | I. G. | 1998 | Berlin | Plenary |
| Daniljuk | I. I. | 1970 | Nice | Analysis |
| Pjateckii-Sapiro | I. I. | 1962 | Stockholm | Analysis |
| Gelfand | I. M. | 1954 | Amsterdam | Plenary |
| Gelfand | I. M. | 1962 | Stockholm | Plenary |
| Gelfand | I. M. | 1970 | Nice | Plenary |
| Sigal | I. M. | 1990 | Kyoto | Mathematical Physics |
| Singer | I. M. | 1974 | Vancouver | Plenary |
| Vinogradov | I. M. | 1966 | Moskva | Plenary |
| Safarevic | I. R. | 1962 | Stockholm | Plenary |
| Shafarevitch | I. R. | 1970 | Nice | Algebra |