| Last Name | First Name | Year Sort descending | City | Section/Speaker Type |
|---|---|---|---|---|
| Graf | Gian Michele | 2006 | Madrid | Mathematical Physics |
| Green | Ben J. | 2006 | Madrid | Number Theory |
| Griebel | Michael | 2006 | Madrid | Applications of Mathematics in the Sciences |
| Grojnowski | I. | 2006 | Madrid | Lie Groups and Lie Algebras |
| Grötschel | Martin | 2006 | Madrid | Control Theory and Optimization |
| Grunewald | Fritz | 2006 | Madrid | Algebra |
| Guicciardini | Niccolo | 2006 | Madrid | History of Mathematics |
| Guionnet | Alice | 2006 | Madrid | Probability and Statistics |
| Gunzburger | Max | 2006 | Madrid | Numerical Analysis and Scientific Computing |
| Gursky | Matthew | 2006 | Madrid | Partial Differential Equations |
| Haiman | Mark | 2006 | Madrid | Combinatorics |
| Hamilton | Richard | 2006 | Madrid | Plenary |
| Henniart | Guy | 2006 | Madrid | Lie Groups and Lie Algebras |
| Hofmann | Steven | 2006 | Madrid | Analysis |
| Honda | Ko | 2006 | Madrid | Geometry |
| Hwang | Jun-Muk | 2006 | Madrid | Algebraic and Complex Geometry |
| Ishii | Hitoshi | 2006 | Madrid | Partial Differential Equations |
| Iwaniec | Henryk | 2006 | Madrid | Plenary |
| Johnstone | Iain | 2006 | Madrid | Plenary |
| Kaloshin | Vadim | 2006 | Madrid | Ordinary Differential Equations and Dynamical Systems |
| Kapovich | Michael | 2006 | Madrid | Geometry |
| Kato | Kazuya | 2006 | Madrid | Plenary |
| Keller | Bernard | 2006 | Madrid | Algebra |
| Kenderov | Petar | 2006 | Madrid | Mathematics Education and Popularization of Mathematics |
| Khovanov | Mikhail | 2006 | Madrid | Topology |