| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Alexandrov | A. D. | 1958 | Edinburgh | Plenary |
| Alexandrov | P. S. | 1954 | Amsterdam | Plenary |
| Alexandroff | P. | 1928 | Bologna | Geometry |
| Alexandroff | P. | 1932 | Zurich | Geometry |
| Alexander | H.W. | 1950 | Cambridge (USA) | Geometry and Topology |
| Alexander | J. W. | 1932 | Zurich | Plenary |
| Alesker | Semyon | 2002 | Beijing | Operator Algebras & Functional Analysis |
| Alekseev | Anton | 2014 | Seoul | Mathematical Physics |
| Aleksandrov | A. B. | 1986 | Berkeley | Complex Analysis |
| Aldous | David | 1998 | Berlin | Prob & Stats |
| Aldous | David | 2010 | Hyderabad | Plenary |
| Albert | A. A. | 1950 | Cambridge (USA) | Plenary |
| Albenga | G. | 1928 | Bologna | Philosophy, History of Mathematics |
| Albanese | G. | 1928 | Bologna | Geometry |
| Akimoff | M. | 1928 | Bologna | Analysis |
| Akimoff | M. | 1932 | Zurich | Mechanics and Mathematical Physics |
| Ajtai | Miklos | 1998 | Berlin | Mathematical Aspects of Computer Science |
| Aizerman | M. A. | 1966 | Moskva | Mathematical problems of control systems |
| Aizenman | M. | 1983 | Warszawa | Mathematical physics & mechanics |
| Ahmed | Mursi | 1936 | Oslo | Analysis |
| Ahlfors | L. V. | 1932 | Zurich | Analysis |
| Ahlfors | L.V. | 1978 | Helsinki | Plenary |
| Ahlfors | Lars V. | 1936 | Oslo | Plenary/Prize winner |
| Aharonov | Dorit | 2010 | Hyderabad | Mathematical Aspects of Computer Science |
| Agrawal | Manindra | 2006 | Madrid | Mathematical Aspects of Computer Science |