Proof may refer to:

• A rigorous, compelling argument
  • Formal proof
  • Mathematical proof
  • Proof theory, a branch of mathematical logic that represents proofs as formal mathematical objects
  • Logical argument
  • Evidence (law), tested evidence or a legal proof

• Various kinds of testing, checking, or measuring
  • Proofing (baking technique), the process by which a yeast-leavened dough rises, also called ?proving?
  • Proofreading
  • Artist's proof, a single print taken during the printmaking process
  • Proof coinage, a coin made as an example of a particular strike
  • Proof test, for a firearm
  • Homeopathic proving, testing a substance's effect on the body
  • Galley proof, a preliminary version of a publication
  • Proof (alcohol), a measure of an alcoholic drink?s strength

• In entertainment
  • Proof (1991 film), an Australian film by Jocelyn Moorhouse
  • Proof (play), a play by David Auburn
  • Proof (2005 film), a film directed by John Madden, based on the play
  • "Proof", a B-side by the band Coldplay, off their single Speed of Sound
  • "Proof", a song by Paul Simon from his 1990 album The Rhythm of the Saints
  • "Proof", a song by Happy Rhodes from her 1998 album Many Worlds Are Born Tonight
  • "Proof", a 2004 song by J-pop group angela
  • "Proof", a 2007 song by Japanese artist Mell
  • Proof (rapper), a deceased member of D12
  • Proof (comics), a comic series from Image Comics

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