Kantor served as President of the
European Jewish Congress in 2007–2022, and was re-elected President of the EJC for a fifth term in May 2025, during the EJC General Assembly in Jerusalem, gathering almost two-thirds of the vote of its delegates, representatives of the European national Jewish communities. The EJC, the largest secular organization representing the interests of European Jewry, is an influential, international public association representing 2.5 million Jews across the European continent in 42 national Jewish communities. In 2021, he was reelected Chairman of the Policy Council of the
World Jewish Congress for the third time Kantor is a Vice President of the
Jewish Leadership Council. In 2010, he established the Kantor Center for the Study of Contemporary European Jewry at Tel Aviv University. In 2019,
Yad Vashem nominated Moshe Kantor as Chancellor of the council, and before it he served as its Member of Directorate since 2010. Kantor was President of the Russian Jewish Congress (RJC) in 2005–2009. He founded and headed the
World Holocaust Forum (WHF) in 2005. He is a founder and chairman of the
European Jewish Fund (EJF), established in 2006. He has chaired the
World Holocaust Forum Foundation. In 2020, the World Holocaust Forum organized by Kantor came under controversy after Vladimir Putin was allowed to give a speech that distorted the history of the Soviet Union in World War II. The forum refused to allow Polish President
Andrzej Duda to have a speaking slot. In 2007, Kantor founded and was elected president of the
International Luxembourg Forum on Preventing Nuclear Catastrophe, an international non-governmental organisation uniting leading world-renowned experts on
nuclear non-proliferation, materials and delivery vehicles. The Forum was established pursuant to a decision of the International Conference held in
Luxembourg on 24–25 May 2007. The conference was attended by over 50 renowned experts from 14 countries, including
Sergey Kirienko, Director General of the
Rosatom State Atomic Energy Corporation,
Mohamed ElBaradei, Director General of the
International Atomic Energy Agency (IAEA), Nikolay Laverov, Academician and Vice President of the
Russian Academy of Sciences (RAS),
William Perry, former Secretary of the U.S. Department of Defense, and
Hans Blix, Chairman of the Weapons of Mass Destruction Commission and former Director General of the IAEA. ==Personal life==