Cow has several uses, it may refer to:

• A cow is a female of various animal species, including:
  • Cattle or females of the Bovine family - in English, "cow" is usually spoken to refer specifically to female cattle, but in vernacular language it often refers to any cattle regardless of sex. See also bull.
  • Elephant
  • Whale

• An insulting remark, usually directed at a female of the species

• Cow also refers to:
  • COW programming language, an esoteric programming language.
  • Cash cow, an economic term.
  • Cow tipping.
  • You have two cows.

• COW is an acronym for a number of things:
  • Can of worms
  • Casualty of War
  • Cell On Wheels
  • City of Westminster
  • Coalition of the Willing
  • Cold worked
  • College of Wooster
  • Commanding Officer's Wife
  • Copy-on-write
  • Cost of war
  • Crude oil washing