Fag may refer to:
- Fag, a British colloquialism for cigarette
- Fag, a junior boy who acts or acted as servant ("fagging") to a senior boy at a British independent school
- Fag, or faggot (slang), an American English slur for a gay or effeminate man.
- A short form used among stock exchange traders for the stock of Antofagasta PLC
FAG may refer to:
- Fuerza Aérea Guatemalteca, the Guatemalan Air Force
- Fluorescein angiography, a medical procedure
- Find A Grave, a web listing of gravesites
- Fuerzas Armadas Guanches, a terrorist group in the Canary Islands
- Federação Anarquista Gaúcha, Brazilian anarchist organization
- FAG, a brand of Schaeffler Group