OF

OF may refer to:

• Oxygen fluorides
• Air Finland IATA airline designator
• Old Firm, a term that refers to Glasgow-based association football clubs Celtic F.C. and Rangers F.C.
• Old French
• Osvobodilna fronta ("Liberation Front" in Slovene)
• Civic Forum (Občanské fórum in Czech), a former Czech political movement
• OpenFirmware, a computer software which loads an operating system
• Old Fettesian: sometimes used as post-nominal letters to identify alumni of the prestigious British public school Fettes College, Edinburgh, Scotland
• Odd Future, or Odd Future Wolf Gang Kill Them All, a Los Angeles based hip-hop collective
• OpenFeint, a social gaming network for iOS (Apple) and Android
• Operation Flashpoint, a video game series
  • Operation Flashpoint: Cold War Crisis, the first game
  • Operation Flashpoint: Dragon Rising, the sequel to the first game
  • Operation Flashpoint: Red River, the third game in the series
• Old Fashioned, a drink

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