| AGOL | Ian | UC Berkeley | 04 Mar 2012 | 31 Mar 2012 |
| ANTON | Lukyanenko | University of Illinois Urbana-Champaign | 13 Fév 2012 | 03 Mar 2012 |
| ASKARIPOUR | Nadya | University of Windsor (currently) | 02 Jan 2012 | 31 Mar 2012 |
| BABA | Shinpei | Universität Bonn | 01 Mar 2012 | 31 Mar 2012 |
| BAKER | Mark | Universite Rennes 1/ IRMAR | 03 Jan 2012 | 30 Mar 2012 |
| BARBOT | Thierry | Université d'Avignon | 12 Mar 2012 | 30 Mar 2012 |
| BARTET | Aristide-oswald | MIT, DMSE | 02 Jan 2012 | 30 Mar 2012 |
| BASEILHAC | Stephane | Université Montpellier 2 | 06 Fév 2012 | 09 Mar 2012 |
| BASMAJIAN | Ara | City University of New York | 06 Fév 2012 | 17 Fév 2012 |
| BASU | Bodhisattwa | USTL,Lille | 02 Jan 2012 | 31 Mar 2012 |
| BIQUARD | Olivier | DMA, École Normale Supérieure | 03 Jan 2012 | 30 Mar 2012 |
| BOALCH | Philip | ENS DMA | 03 Jan 2012 | 02 Mar 2012 |
| BOISSY | Corentin | Université Aix-Marseille | 27 Fév 2012 | 13 Mar 2012 |
| BONSANTE | Francesco | universita di pavia | 05 Mar 2012 | 30 Mar 2012 |
| BRIDGEMAN | Martin | Boston College | 03 Jan 2012 | 01 Avr 2012 |
| BROMBERG | Kenneth | University of Utah, Department of Mathematics | 03 Mar 2012 | 25 Mar 2012 |
| BUFETOV | Alexander | Steklov Institute, Moscow, and Rice University | 10 Jan 2012 | 31 Mar 2012 |
| CALSAMIGLIA | Gabriel | Universidade Federal Fluminense | 01 Jan 2012 | 31 Mar 2012 |
| CAVENDISH | William | Princeton | 03 Jan 2012 | 30 Mar 2012 |
| CHARETTE | Virginie | Université de Sherbrooke | 01 Jan 2012 | 01 Juil 2012 |
| COOPER | Daryl | UCSB | 05 Jan 2012 | 31 Mar 2012 |
| COSTANTINO | Francesco | IRMA, Strasbourg | 15 Jan 2012 | 30 Mar 2012 |
| COURTOIS | Gilles | Paris 6 | 03 Jan 2012 | 30 Mar 2012 |
| DANCIGER | Jeffrey | UT - Austin | 03 Jan 2012 | 31 Mar 2012 |
| DASHYAN | Ruben | ENS Paris | 03 Jan 2012 | 30 Mar 2012 |
| DIALLO | Boubacar | Paul Sabatier | 12 Fév 2012 | 26 Fév 2012 |
| DISARLO | Valentina | IRMA - Strasbourg | 02 Jan 2012 | 11 Mar 2012 |
| DREYER | Guillaume | University of Southern California | 13 Déc 2011 | 31 Mar 2012 |
| DUMAS | David | University of Illinois at Chicago | 18 Mar 2012 | 24 Mar 2012 |
| ERSCHLER | Anna | Orsay University | 03 Jan 2012 | 30 Mar 2012 |
| FILLASTRE | François | Laboratoire AGM | 02 Jan 2012 | 30 Mar 2012 |
| FLORENTINO | Carlos | Inst. Sup. Tecnico, Univ. Tecnica Lisboa | 05 Fév 2012 | 13 Fév 2012 |
| FOCK | Vladimir | Université de Strasbourg | 10 Jan 2012 | 30 Mar 2012 |
| FRIGERIO | Roberto | Università di Pisa, Italy | 24 Mar 2012 | 31 Mar 2012 |
| FUNAR | Louis | Institut Fourier | 12 Jan 2012 | 10 Fév 2012 |
| GARCIA-PRADA | Oscar | Consejo Superior de Investigaciones Cientificas | 01 Fév 2012 | 11 Mar 2012 |
| GASTER | Jonah | Uinversity of Illinois - Chicago | 03 Jan 2012 | 30 Mar 2012 |
| GENINSKA | Slavyana | Université Paul Sabatier | 26 Fév 2012 | 16 Mar 2012 |
| GOLDMAN | Bill | University of Maryland | 01 Jan 2012 | 31 Mar 2012 |
| GONGOPADHYAY | Krishnendu | Indian Institute of Science Education and Research (IISER) Mohali | 01 Mar 2012 | 14 Mar 2012 |
| GUICHARD | Olivier | Orsay | 27 Jan 2012 | 27 Jan 2012 |
| HAGLUND | Frédéric | Orsay | 03 Jan 2012 | 30 Mar 2012 |
| HAMLET | Oskar | Gothenburg University | 10 Jan 2012 | 05 Fév 2012 |
| HARTNICK | Tobias | Institut Mittag-Leffler | 08 Mar 2012 | 10 Mar 2012 |
| HEINIG | Peter | Technische Universität München | 11 Jan 2012 | 31 Mar 2012 |
| HILSUM | Michel | CNRS | 06 Jan 2012 | 24 Mar 2012 |
| HO | Nan-kuo | National Tsing-Hua University | 02 Jan 2012 | 11 Fév 2012 |
| HORBEZ | Camille | ENS Paris | 03 Jan 2012 | 30 Mar 2012 |
| HOSKINS | Victoria | University of Oxford | 03 Jan 2012 | 30 Mar 2012 |
| HU | Hengnan | National University of Singapore | 03 Jan 2012 | 10 Fév 2012 |
| IOZZI | Alessandra | ETH | 06 Jan 2012 | 09 Jan 2012 |
| IZMESTIEV | Ivan | TU Darmstadt | 05 Fév 2012 | 31 Mar 2012 |
| JANE | Gilman | Rutgers-Newark | 05 Fév 2012 | 10 Fév 2012 |
| JEON | Woojin | KIAS(www.kias.re.kr) | 30 Déc 2011 | 02 Avr 2012 |
| JOAN | Porti | U.Autònoma de Barcelona | 13 Fév 2012 | 18 Fév 2012 |
| KABAYA | Yuichi | Osaka University | 29 Déc 2011 | 27 Mar 2012 |
| KASSEL | Fanny | Université Lille 1 | 02 Jan 2012 | 31 Mar 2012 |
| KERCKHOFF | Steven | Stanford University | 01 Mar 2012 | 31 Mar 2012 |
| KIM | Inkang | KIAS | 02 Jan 2012 | 30 Mar 2012 |
| KIM | Sang-hyun | KAIST | 23 Mar 2012 | 01 Avr 2012 |
| KIM | Sungwoon | KIAS | 01 Jan 2012 | 01 Avr 2012 |
| KIM | Youngju | Korea Institute for Advanced Study | 05 Fév 2012 | 31 Mar 2012 |
| KIRILL | Krasnov | University of Nottingham | 12 Jan 2012 | 26 Jan 2012 |
| KOLPAKOV | Aleksandr | Universite de Fribourg | 12 Fév 2012 | 30 Mar 2012 |
| LABOURIE | François | université Paris-Sud | 01 Jan 2012 | 30 Avr 2012 |
| LAMBERTI | Lisa | ETHZ | 16 Jan 2012 | 24 Jan 2012 |
| LAUN | Greg | University of Maryland | 02 Jan 2012 | 12 Fév 2012 |
| LE | Ian | Northwestern | 15 Jan 2012 | 11 Fév 2012 |
| LECUIRE | Cyril | Institut de Mathématiques de Toulouse | 15 Fév 2012 | 31 Mar 2012 |
| LEE | Gye-seon | Seoul National University | 03 Jan 2012 | 31 Mar 2012 |
| LEE | Michelle | University of Michigan | 05 Fév 2012 | 10 Mar 2012 |
| LEEB | Bernhard | Universität München | 04 Fév 2012 | 31 Mar 2012 |
| LEININGER | Christopher | University of Illinois at Urbana--Champaign | 04 Mar 2012 | 10 Mar 2012 |
| LELIÈVRE | Samuel | Laboratoire de mathématique d'Orsay | 03 Jan 2012 | 30 Mar 2012 |
| LENZHEN | Anna | Rennes 1 | 01 Mar 2012 | 31 Mar 2012 |
| LHERMITTE | Sylvie | CNRS | 03 Jan 2012 | 30 Mar 2012 |
| LIAO | Benben | IMJ, Paris 7, algebre d'operateurs | 01 Jan 2012 | 30 Mar 2012 |
| LIU | Jinsong | Institute of Mathematics, AMSS, Chinese Academy of Sciences | 03 Mar 2012 | 31 Mar 2012 |
| LO GIUDICE | Alessio | Sissa | 08 Jan 2012 | 11 Mar 2012 |
| LOFTIN | John | Rutgers Newark | 03 Jan 2012 | 30 Mar 2012 |
| LOUSTAU | Brice | Paris-XI | 16 Jan 2012 | 31 Mar 2012 |
| MA | Xiaonan | IMJ | 01 Jan 2012 | 30 Avr 2012 |
| MACHU | Francois-xavier | ENCPB | 08 Fév 2012 | 13 Mar 2012 |
| MALONI | Sara | University of Warwick | 03 Jan 2012 | 30 Mar 2012 |
| MANN | Kathryn | University of Chicago | 05 Mar 2012 | 31 Mar 2012 |
| MARTELLI | Bruno | Università di Pisa | 11 Mar 2012 | 31 Mar 2012 |
| MARTIN | Magali | IHP | 03 Jan 2012 | 30 Mar 2012 |
| MASBAUM | Gregor | IMJ Paris | 03 Jan 2012 | 30 Mar 2012 |
| MASUR | Howard | University of Chicago | 03 Mar 2012 | 08 Mar 2012 |
| MAUBON | Julien | IECN - Université Nancy I | 05 Fév 2012 | 31 Mar 2012 |
| MELNICK | Karin | University of Maryland, College Park | 03 Fév 2012 | 17 Mar 2012 |
| MONDELLO | Gabriele | Universita` di Roma "La Sapienza" | 12 Jan 2012 | 02 Mar 2012 |
| MONTCOUQUIOL | Grégoire | Laboratoire de Mathématiques d'Orsay | 03 Jan 2012 | 30 Mar 2012 |
| MORABITO | Filippo | KIAS | 02 Jan 2012 | 30 Mar 2012 |
| MOROIANU | Sergiu | Institut de Mathematiques Simion Stoilow de l'Academie Roumaine | 02 Jan 2012 | 31 Mar 2012 |
| NGUYEN | Duc-manh | IMB Bordeaux, Universite Bordeaux 1 | 03 Jan 2012 | 10 Fév 2012 |
| NGUYEN | Maxime | Institut Fourier | 06 Fév 2012 | 09 Mar 2012 |
| NIE | Xin | IMJ, Paris 6 | 01 Jan 2012 | 31 Mar 2012 |
| OHSHIKA | Ken'ichi | Osaka University | 05 Mar 2012 | 31 Mar 2012 |
| PALESI | Frederic | Université Aix-Marseille 3 | 03 Jan 2012 | 09 Mar 2012 |
| PAPADOPOULOS | Athanase | IRMA, Strasbourg | 03 Jan 2012 | 10 Mar 2012 |
| PARKER | John | Durham | 05 Fév 2012 | 11 Fév 2012 |
| PARREAU | Anne | Université Grenoble 1 | 02 Jan 2012 | 30 Mar 2012 |
| PAULIN | Frédéric | Université Paris-Sud | 02 Jan 2012 | 30 Mar 2012 |
| PECASTAING | Vincent | Laboratoire de mathématiques d'Orsay | 03 Jan 2012 | 30 Mar 2012 |
| POTYAGAILO | Leonid | University of Lille 1 | 19 Mar 2012 | 30 Mar 2012 |
| POZZETTI | Maria beatrice | ETH | 06 Fév 2012 | 10 Fév 2012 |
| REMY | Bertrand | Univ. Lyon 1 | 30 Jan 2012 | 12 Fév 2012 |
| RENARD | Claire | Paul Sabatier Toulouse III /Institut de Mathématiques de Toulouse/ Emile Picard | 02 Jan 2012 | 31 Mar 2012 |
| RUIZ | Domingo | University of Maryland | 01 Jan 2012 | 31 Mar 2012 |
| SANDERS | Andy | University of Maryland, College Park | 01 Jan 2012 | 30 Mar 2012 |
| SANTHAROUBANE | Ramanujan | IMJ | 11 Jan 2012 | 11 Jan 2012 |
| SCARASCIA | Mario luca | Università "La Sapienza" di Roma | 02 Jan 2012 | 31 Mar 2012 |
| SCARINCI | Carlos | University of Nottingham | 03 Jan 2012 | 11 Fév 2012 |
| SCHAFFHAUSER | Florent | Universidad de Los Andes, Bogota | 02 Jan 2012 | 30 Mar 2012 |
| SCHAPOSNIK | Laura | Oxford University | 02 Jan 2012 | 13 Fév 2012 |
| SCHLEIMER | Saul | University of Warwick | 25 Mar 2012 | 31 Mar 2012 |
| SCHLENKER | Jean-marc | Toulouse 3 / IMT | 03 Jan 2012 | 30 Mar 2012 |
| SEAN | Lawton | University of Texas-Pan American | 04 Fév 2012 | 12 Fév 2012 |
| SEED | Cotton | Princeton University | 02 Jan 2012 | 10 Fév 2012 |
| SERIES | Caroline | Warwick | 25 Mar 2012 | 31 Mar 2012 |
| SIKORA | Adam | SUNY Buffalo | 02 Jan 2012 | 21 Jan 2012 |
| SLAVICH | Leone | Università degli studi di Firenze | 12 Mar 2012 | 30 Mar 2012 |
| SLUTSKIY | Dmitriy | Université Paul Sabatier - Toulouse 3 | 02 Jan 2012 | 31 Mar 2012 |
| SOUAM | Rabah | IMJ | 03 Jan 2012 | 30 Mar 2012 |
| SRIRATANAKOUL | Nitdavanh | Institut Henri Poincaré - Centre Emile Borel | 03 Jan 2012 | 30 Mar 2012 |
| SRIVASTAVA | rajesh | Harish-Chandra Research Institute | 02 Jan 2012 | 30 Mar 2012 |
| STOVER | Matthew | University of Michigan | 29 Jan 2012 | 07 Mar 2012 |
| STRUBEL | Tobias | ETH Zürich | 03 Jan 2012 | 31 Mar 2012 |
| SUN | Zhe | Université de Paris Sud 11 | 03 Jan 2012 | 30 Mar 2012 |
| SZABO | Szilard | Universite Technique de Budapest | 08 Jan 2012 | 31 Mar 2012 |
| TAN | Ser peow | National University of Singapore | 03 Jan 2012 | 31 Mar 2012 |
| THOMPSON | James | University of Durham | 03 Jan 2012 | 30 Mar 2012 |
| TILLMANN | Stephan | The University of Queensland | 12 Fév 2012 | 03 Mar 2012 |
| TOLEDO | Domingo | University of Utah | 11 Jan 2012 | 09 Mar 2012 |
| TOULISSE | Jérémy | Université Paul Sabatier | 13 Fév 2012 | 02 Mar 2012 |
| VILLE | Marina | LMPT Tours | 09 Jan 2012 | 31 Mar 2012 |
| WENTWORTH | Richard | University of Maryland | 02 Jan 2012 | 31 Mar 2012 |
| WIENHARD | Anna | | 22 Mai 2013 | 22 Mai 2013 |
| WILKIN | Graeme | University of Colorado | 03 Jan 2012 | 30 Mar 2012 |
| WOLF | Michael | Rice University Department of Mathematics | 11 Fév 2012 | 03 Mar 2012 |
| ZUPAN | Alexander | University of Iowa | 12 Mar 2012 | 31 Mar 2012 |