The International Space Science Institute (ISSI) is a nonprofit organisation set up in Bern in 1995 as a foundation under Swiss law. Three statutory bodies govern ISSI: the Board of Trustees, the Directorate, and the Science Committee. A fourth important body, the Association Pro ISSI, promotes the idea of ISSI, especially within Switzerland.

The European Space Agency (ESA), the Swiss Confederation, and the Swiss Academy of Sciences (SCNAT) provide the financial resources for ISSI’s operation. The University of Bern contributes through a grant to a Director and in-kind facilities. The Institute of Space and Astronautical Science (ISAS/JAXA) is supporting ISSI with an annual financial contribution. 

Willy Benz (Chair), University of Bern, Switzerland
Monica Tosi (Vice Chair), INAF – OAS Bologna, Bologna, Italy
Michael Rast (Secretary of the Board, ad interim), International Space Science Institute, Bern, Switzerland

Ravit Helled, University of Zurich, Switzerland
Masaki Fujimoto, Institute of Space and Astronautical Sciences (ISAS), JAXA, Kanagawa, Japan
Renato Krpoun, Swiss Space Office, Bern, Switzerland
Christoph Mordasini, University of Bern, Switzerland
Carole Mundell, ESA, Paris, France
Aude Pugin, APCO Technologies, Aigle, Switzerland
Linda J. Tacconi, MPI for extraterrestrial Physics, Garching, Germany
Michele Weber, President of the Pro ISSI Association, Bern, Switzerland
Holger Wentscher, Beyond Gravity, Zurich, Switzerland
Ji Wu, National Space Science Center (CAS) and International Space Science Institute Beijing, China
Lev M. Zelenyi, Space Research Institute (IKI), Russian Academy of Sciences, Moscow, Russia

Emmanuelle J. Javaux (Chair), Université de Liège, Belgium
Raphael Marschall and Sabina Raducan (Secretary of the Science Committee), International Space Science Institute, Bern, Switzerland

Angela Adamo, Stockholm University, Sweden
Annett Bartsch, b.geos, Korneuburg, Austria
Paul Charbonneau, University of Montreal, Canada
Annalisa De Cia, European Southern Observatory (ESO), Germany
Xiaolong Dong, International Space Science Institute Beijing, Beijing, China (ex officio)
Eelco Doornbos, KNMI, the Netherlands
Ilaria Ermolli, INAF-OAR, Italy
Vladislav Izmodenov, IKI, Russian Academy of Sciences, Moscow, Russia (ex officio RAS)
Benjamin Koetz, ESA ESRIN, Frascati, Italy (ex officio ESA)
Jasmina Magdalenić, University of Leuven, Belgium
Roberto Maiolino, University of Cambridge, UK
Michael Meyer, University of Michigan, USA
Paul McNamara, ESTEC ESA, Noordwijk, The Netherlands (ex officio ESA)
Samaya Nissanke, University of Potsdam, Germany (leading scientist at DESY)
Claudia Stolle, IAP Kühlungsborn, Germany
Shogo Tachibana, UTOPS University of Tokyo, Japan
Daniel Verscharen, UCL, UK
Linghua Wang, Peking University, China
Michael Wong, UC Berkeley, USA

Antonella Nota, Executive Director
Thierry Dudok de Wit, Director
Michael Rast, Director
Roger-Maurice Bonnet, Honorary Director

Scientists

Rosita Kokotanekova, Discipline Scientist
Marta Marcos, Discipline Scientist
Rumi Nakamura, Discipline Scientist
Siyi Xu, Discipline Scientist
Sabina Raducan, Science Programme Manager
Raphael Marschall, Science Programme Manager
Brian Welch, Fellow
Htet Yamin Ko Ko, Felllow

Administration and Management

Sesil Ayri, Head of Finance
Cosima-Lea Baier, Secretary
Fabio Crameri, Science Communication Specialist
Andrea Fischer, Editorial Manager
Dominique Fuchs, Assistants to the Executive Director
Xeila Monteagudo, Secretary
Irmela Schweizer, Librarian
Willi Wäfler, Computer Engineer

All lists show the status at the end of the 30^th business year on 31 December 2025.