3F

3F or 3-F may refer to:


 * Fédération Française de Football (French Football Federation), the governing body of football in France
 * Fagligt Fælles Forbund
 * Fangio, Farina, Fagioli - drivers of the Alfa Romeo factory team
 * 3 Fonteinen - Belgian brewery, specializing in gueuze and kriek
 * 0x3F, ASCII code for question mark
 * Tres de Febrero Partido, Buenos Aires Province, Argentina