| Last Name | First Name | Year Sort ascending | City | Section/Speaker Type |
|---|---|---|---|---|
| Suli | Endre | 2006 | Madrid | Numerical Analysis and Scientific Computing |
| Szabó | Zoltán | 2006 | Madrid | Topology |
| Szarek | Stanislaw | 2006 | Madrid | Operator Algebras and Functional Analysis |
| Szepessy | Anders | 2006 | Madrid | Applications of Mathematics in the Sciences |
| Tao | Terence | 2006 | Madrid | Plenary/Prize winner |
| Temlyakov | Vladimir | 2006 | Madrid | Analysis |
| Terasoma | Tomohide | 2006 | Madrid | Algebraic and Complex Geometry |
| Terng | Chuu-Lian | 2006 | Madrid | Geometry |
| Thomas | Robin | 2006 | Madrid | Combinatorics |
| Thomas | Simon | 2006 | Madrid | Logic and Foundations |
| Tolsa | Xavier | 2006 | Madrid | Analysis |
| Trevisan | Luca | 2006 | Madrid | Mathematical Aspects of Computer Science |
| Trudinger | Neil | 2006 | Madrid | Partial Differential Equations |
| Tschinkel | Yuri | 2006 | Madrid | Algebraic and Complex Geometry |
| Urban | Eric | 2006 | Madrid | Number Theory |
| Van der Schaft | Arjan | 2006 | Madrid | Control Theory and Optimization |
| Vatsal | Vinayak | 2006 | Madrid | Number Theory |
| Vázquez | Juan Luis | 2006 | Madrid | Plenary |
| Vega | Luis | 2006 | Madrid | Partial Differential Equations |
| Veläzquez | Juan L. | 2006 | Madrid | Partial Differential Equations |
| Vergne | Michèle | 2006 | Madrid | Plenary |
| Villani | Cédric | 2006 | Madrid | Mathematical Physics |
| Vogtmann | Karen | 2006 | Madrid | Topology |
| Werner | Wendelin | 2006 | Madrid | Probability and Statistics/Prize winner |
| Wiegmann | Paul | 2006 | Madrid | Mathematical Physics |