Membership of the ISC is open to any national academy, agency, scientific institution or other non-profit organisation. Any commercial organisation with an interest in the objectives and/or output of the Centre may become an Associate Member. Each member of the ISC is represented on the Governing Council, which is the ruling body of the ISC.
 | Alaska Earthquake Center (AEC), University of Alaska Fairbanks, U.S.A. | Dr. Carl Tape | February 2020 |  |
 | Autorité de Sûreté Nucléaire et de Radioprotection (formerly IRSN), France | Dr. Aurore Laurendeau | October 2021 |  |
 | AWE Blacknest, United Kingdom | | |  |
 | Belgian Science Policy Office (BELSPO), Belgium | Dr. Kris Vanneste | February 2021 |  |
 | Center for Earthquake Research and Information (CERI), the University of Memphis, U.S.A. | Dr. Mitch Withers | July 2024 |  |
 | Centre de Recherche en Astronomie, Astrophysique et Géophysique (CRAAG), Algeria | Dr. Hamoud Beldjoudi | March 2023 |  |
 | Centre of Geophysical Monitoring (CGM) of the National Academy of Sciences of Belarus | Prof. Arkady Aronov | January 2011 |  |
 | Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Mexico | Dr. Héctor González Huizar | January 2021 |  |
 | Centro Sismologico Nacional, Universidad de Chile | Dr. Sergio Barrientos | April 1995 |  |
 | Dublin Institute for Advanced Studies, Ireland | Dr. Martin Mollhoff | January 2019 |  |
 | Earth Observatory of Singapore (EOS), an autonomous Institute of Nanyang Technological University, Singapore | Asst. Prof Shengji Wei | September 2019 |  |
 | Environmental Agency of Slovenia | Tamara Jesenko | August 2023 |  |
 | Geological Survey Department, Cyprus | Mr Christodoulos Hadjigeorgiou | January 2021 |  |
 | Geological Survey of Israel | Dr. Nadav Wetzler | January 2020 |  |
 | Geophysics, Research School of Earth Sciences, Australian National University, Australia | Prof. Hrvoje Tkalcic | October 2023 |  |
 | Institut Cartogràfic i Geològic de Catalunya (ICGC), Spain | Dr. Josep Batllo | July 2017 |  |
 | Institute of Earth Physics and Space Science (EPSS), Hungarian Research Network (ELKH), Hungary | Mr Mate Timko | April 2021 |  |
 | Institute of Earth Sciences, Academia Sinica, Chinese Taipei | Dr. Bor-Shouh Huang | |  |
 | Institute of Geophysics, Czech Academy of Sciences, Czech Republic | Dr. Jaroslava Plomerova | January 1994 |  |
 | Institute of Geophysics, National University of Mexico | Dr. Xyoli Perez-Campos | |  |
 | Institute of Geophysics, Polish Academy of Sciences, Poland | Dr. Lukasz Rudzinski | September 2020 |  |
 | Institute of Geosciences, Polytechnic University of Tirana, Albania | Dr. Edmond Dushi | August 2024 |  |
 | Institute of Marine Sciences (ICM-CSIC), Spain | Dr. Antonio Villaseñor | June 2021 |  |
 | Iraqi Meteorological Organization and Seismology, Iraq | Dr. Salman Saddam Jasim | July 2024 |  |
 | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Italy | Dr. Paolo Comelli | February 2023 |  |
 | Kandilli Observatory and Earthquake Research Institute, Turkey | Prof. Dr. Nurcan Ozel | May 2024 |  |
 | Korean Meterological Administration, Republic of Korea | Mr. Namchul (Gilbert) Woo | December 2018 |  |
 | Lamont-Doherty Earth Observatory, Columbia Climate School, Columbia University, U.S.A. | Prof. Goran Ekstrom | January 2023 |  |
 | Mavlyanov Institute of Seismology, Academy of Sciences, Republic of Uzbekistan | Dr. Murod Mirzaev | June 2024 |  |
 | National Defence Research Establishment (FOI), Sweden | Dr. Henrik Olsson | May 2024 |  |
 | National Institute for Earth Physics, Romania | Ms. Andreea Chircea | January 2023 |  |
 | National Institute of Geophysics, Geodesy and Geography (NIGGG), Bulgarian Academy of Sciences, Bulgaria | Prof. Dimcho Solakov | April 2019 |  |
 | National Institute of Polar Research (NIPR), Japan | Dr. Masaki Kanao | January 2014 |  |
 | National Research Institute for Astronomy and Geophysics (NRIAG), Cairo, Egypt | Dr. Sherif Mohamed El-Hady | March 2021 |  |
 | Observatorio Nacional, Brazil | Dr. Sergio Fontes | September 2019 |  |
 | Pacific Northwest Seismic Network (PNSN), U.S.A. | | |  |
 | Red Sísmica de Puerto Rico | Dr. Victor Huerfano | February 2010 |  |
 | Seismological Observatory, Institute of Geosciences, University of Brasilia, Brazil | Prof. Dr. George Sand Franca | October 2016 |  |
 | Soreq Nuclear Research Centre (SNRC), Israel | Dr. Yael Radzyner | March 2018 |  |
 | Texas Seismological Network (TexNet), Bureau of Economic Geology, J.A. and K.G. Jackson School of Geosciences, University of Texas at Austin, U.S.A. | Dr. Alexandros Savvaidis | November 2019 |  |
 | The Icelandic Meteorological Office, Iceland | | |  |
 | The Seismological Institute, National Observatory of Athens, Greece | Dr. Olga-Joan Ktenidou | May 2020 |  |
 | Universidade de São Paulo, Centro de Sismologia, Brazil | Dr. Marcelo Assumpcao | June 2015 |  |
 | University of the West Indies at Mona, Jamaica | Dr. Donovan Campbell | September 2019 |  |
 | University of Utah Seismograph Stations (UUSS), U.S.A. | Dr. Keith Koper | January 2020 |  |