 Fédération Internationale des Sociétés Aérophilatéliques

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.