The FIA is the (), the world's governing body for all forms of motor sport where four or more wheels are used.
Fia or FIA may also refer to:
People
Fia Backström (born 1970), Swedish artist Albert Fia (1915–2004), Canadian engineer Maʻafu Fia (born 1989), Tongan-born New Zealand rugby union player
Organizations Federal Investigation Agency, the chief investigative body of the Government of Pakistan Federated Ironworkers' Association of Australia Fellow of the Institute of Actuaries, member of a professional association in the United Kingdom FIA Card Services, formerly MBNA Corporation Fire Industry Association, trade association in the United Kingdom Fiscal Information Agency, government agency in Taiwan Friends in Action, American Christian organization Future Imagery Architecture, program of the United States National Reconnaissance Office Futures Industry Association, trade association in the United States International Federation of Actors (Federation Internationale des Acteurs), global union federation Free Iraqi Army Fusion Industry Association, independent trade association for the international nuclear fusion industry
Other uses Farnborough International Airshow, in England Feline infectious anemia, disease found in felines FIA hair system, system for classifying human hair types Fixed Income Annuity Flow injection analysis, a form of chemical analysis Freund's incomplete adjuvant, stimulant of the immune system Nobiin language (ISO 639-3 code fia)