| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Iskovskih | V. A. | 1983 | Warszawa | Algebraic Geometry |
| Ishii | Hitoshi | 2006 | Madrid | Partial Differential Equations |
| Iritani | Hiroshi | 2022 | Virtual | Geometry |
| Iovita | Adrian | 2018 | Rio de Janeiro | Number Theory |
| Iooss | Gerard | 1998 | Berlin | Applications |
| Ionescu | Alexandru D. | 2022 | Virtual | Partial Differential Equations |
| Ionel | Eleny-Nicole | 2002 | Beijing | Topology |
| Ioana | Adrian | 2018 | Rio de Janeiro | Analysis and Operator Algebras |
| Insolera | Filadelfo | 1932 | Zurich | Probability calculus, insurance mathematics, and statistics |
| Inoue | Masahisa | 1974 | Vancouver | Algebraic Geometry |
| Indyk | Piotr | 2018 | Rio de Janeiro | Mathematical Aspects of Computer Science |
| Impagliazzo | Russell | 2002 | Beijing | Mathematical Aspects of Computer Science |
| Imhausen | Annette | 2022 | Virtual | History of Mathematics |
| Ilyashenko | Ju. | 1978 | Helsinki | Ord. diff. equations & dynamical systems |
| Ilyashenko | Ju. S. | 1990 | Kyoto | Ordinary Differential Equations & Dynamical Systems |
| Iline | V. A. | 1970 | Nice | Analysis |
| Ikawa | Mitsuru | 1990 | Kyoto | Partial Differential Equations |
| Iitaka | S. | 1983 | Warszawa | Algebraic Geometry |
| Ihara | Yasutaka | 1970 | Nice | Algebra |
| Ihara | Yasutaka | 1990 | Kyoto | Plenary |
| Igusa | J. | 1962 | Stockholm | Algebraic Geometry |
| Igusa | Kiyoshi | 1990 | Kyoto | Topology |
| Ichino | Atsushi | 2022 | Virtual | Number Theory |
| Ibragimov | I. A. | 1966 | Moskva | 1/2 hr. report |
| Hytönen | Tuomas | 2014 | Seoul | Analysis and its Applications |