The International Union of Immunological Societies (IUIS), a member of the International Council for Science, is an organization which serves as an umbrella organization for many national and regionally grouped immunological societies. The organization was founded in 1969. The ten founding member societies were the American Association of Immunologists, British Society for Immunology, Canadian Society for Immunology, Dutch Society for Immunology, Gesellschaft fur Immunologie, Israel Immunological Society, Polish Society of Immunology, Scandinavian Society for Immunology, Societe Francaise d’immunologie, and Yugoslav Immunological Society. IUIS had 83 member societies in 2019.