OF

OF or Of may refer to:

• Air Finland Ltd., a defunct Finnish airline by IATA airline code
• Oberführer, a paramilitary rank of the German Nazi Party
• Občanské fórum, or Civic Forum, a Czech political movement established during the Velvet Revolution in 1989
• Of, Turkey, a town and district in Trabzon Province, Turkey
• Offenbach (district) änd Offenbach am Main, on German vehicle registration plates
• OFWGKTA aka Odd Future (or just OF), full name Odd Future Wolf Gang Kill Them All, a Los Angeles-based hip-hop collective
• Old Fashioned, a drink
• Old Fettesian, sometimes used as post-nominal letters to identify alumni of the British public school Fettes College, Edinburgh, Scotland
• Old Firm, Glasgow-based association football clubs Celtic F.C. and Rangers F.C.
• Old French
• OpenFeint, a social gaming network for iOS (Apple) and Android
• OpenFirmware, a computer software which loads an operating system
• Operation Flashpoint, a video game series
• Osvobodilna fronta, the Liberation Front of the Slovenian People, the main anti-fascist Slovene civil resistance and political organization active during World War II
• Oxygen fluoride, a compound containing only the chemical elements oxygen and fluorine