| Acronym | Definition |
|---|
| FFAO➣Fédération Française des Amateurs d'Orchidées (French: French Federation of Orchid Amateurs) |
| FFAO➣Fédération Francophone des Amis de l'Orgue (French: Francophone Federation of Friends of the Organ; pipe organ appreciation society; est. 1983) |
| FFAO➣Foundation for Appalachian Ohio |
| FFAO➣Fire Fighters Association of Ontario (Ontario, Canada) |
| FFAO➣Futsal Federation of Australia and Oceania (sports) |