Fédération Internationale des Sociétés Aérophilatéliques (International Federation of Aerophilatelic Societies), more commonly known as FISA, is the umbrella association for aerophilatelic societies. FISA represents and promotes Aerophilately and Astrophilately for its collectors within the international world of philately.
The International Federation of Aerophilatelic Societies (FISA) is the central body that unites aerophilatelic clubs worldwide, promoting and supporting Aerophilately and Astrophilately for its members in the broader world of philately.