| Name | Affiliation | period |
| Nalini Anantharaman | Ecole Polytechnique |
11 June 2007
- 7 July 2007 |
| Pierre Arnoux | Aix-Marseille Université |
21 May 2007
- 26 May 2007 |
| Alexander Bufetov | Rice University |
14 May 2007
- 21 May 2007 |
| Carlo Carminati | Università di Pisa |
11 May 2007
- 11 July 2007 |
| Alex Eskin | University of Chicago |
9 June 2007
- 8 July 2007 10 June 2007 - 7 July 2007 11 June 2007 - 6 July 2007 |
| Giovanni Forni | University of Toronto | |
| Pascal Hubert | Aix-Marseille Université |
29 May 2007
- 25 May 2007 |
| Konstantin Khanin | Department of Mathematics, University of Toronto |
15 April 2007
- 28 April 2007 |
| Erwan Lanneau | Centre de Physique Theorique (CPT) - Marseille |
13 May 2007
- 28 May 2007 |
| Yuri Manin | Max-Planck-Institut fuer Mathematik, Bonn, Prof. Emeritus |
28 June 2007
- 5 July 2007 |
| Grigoriy Margulis | Yale University, Connecticut, USA |
16 April 2007
- 27 April 2007 16 April 2007 - 13 July 2007 30 April 2007 - 11 May 2007 14 May 2007 - 1 June 2007 27 May 2007 - 15 June 2007 2 June 2007 - 6 June 2007 11 June 2007 - 6 July 2007 |
| Jens Marklof | University of Bristol |
19 April 2007
- 6 July 2007 |
| Howard Masur | Brown University of Illinois at Chicago |
28 May 2007
- 1 June 2007 |
| Maryam Mirzakhani | Stanford University | |
| David Morris | University of Lethbridge |
10 June 2007
- 20 June 2007 |
| Omri Sarig | Weizman |
15 April 2007
- 28 April 2007 |
| Peter Sarnak | Princeton University |
16 April 2007
- 27 April 2007 16 April 2007 - 13 July 2007 30 April 2007 - 11 May 2007 14 May 2007 - 1 June 2007 2 June 2007 - 6 June 2007 11 June 2007 - 6 July 2007 |
| Mitsuhiro Shishikura | Kyoto University |
17 April 2007
- 28 April 2007 |
| John Smillie | Cornell University |
17 May 2007
- 31 May 2007 |
| Corinna Ulcigrai | University of Bristol |
23 May 2007
- 31 May 2007 10 June 2007 - 7 July 2007 |
| William Veech | Rice University |
13 May 2007
- 2 June 2007 |
| Akshay Venkatesh | New York University |
23 June 2007
- 7 July 2007 |
| Marcelo Viana | IMPA |
13 May 2007
- 2 June 2007 |
| Jean-Christophe Yoccoz | Collège de France, CNRS |
16 April 2007
- 27 April 2007 16 April 2007 - 13 July 2007 30 April 2007 - 11 May 2007 14 May 2007 - 1 June 2007 2 June 2007 - 6 June 2007 10 June 2007 - 30 June 2007 11 June 2007 - 6 July 2007 |