Proof may refer to:

  • Proof (truth), argument or sufficient evidence for the truth of a proposition
  • Formal proof
  • Mathematical proof, a convincing demonstration that some mathematical statement is necessarily true
  • Proof theory, a branch of mathematical logic that represents proofs as formal mathematical objects
  • Alcohol proof, a measure of an alcoholic drink's strength
  • Artist's proof, a single print taken during the printmaking process
  • Galley proof, a preliminary version of a publication
  • Prepress proof, a facsimile of press artwork for job verification
  • Proof coinage, coins once made as a test, but now specially struck for collectors
  • Proofreading, reviewing a manuscript or artwork for errors or improvements
  • Proofing (baking technique), the process by which a yeast-leavened dough rises, also called "proving"

In entertainment:

  • Proof (TV series), an Irish TV drama/thriller
  • Proof, 1980 B/W student film by Black-and-white, expanded to Fandango
  • Proof (1991 film), an Australian film by Jocelyn Moorhouse
  • Proof (play), a play by David Auburn
    • Proof (2005 film), a film by John Madden, based on the play
  • Proof (rapper) (1973–2006), American rapper and member of D12
  • Proof (comics), a comic series from Image Comics
  • "Proof", a 1942 hard SF short story by Hal Clement
  • "Proof", a song by Coldplay from "Speed of Sound"
  • "Proof" (I Am Kloot song), a song by I Am Kloot from their eponymous second album
  • "Proof", a song by Paul Simon from The Rhythm of the Saints
  • "Proof", a song by Happy Rhodes from Many Worlds Are Born Tonight
  • "Proof", a song by angela
  • "Proof", a song by Mell

Famous quotes containing the word proof:

    There are some persons in this world, who, unable to give better proof of being wise, take a strange delight in showing what they think they have sagaciously read in mankind by uncharitable suspicions of them.
    Herman Melville (1819–1891)

    Ah! I have penetrated to those meadows on the morning of many a first spring day, jumping from hummock to hummock, from willow root to willow root, when the wild river valley and the woods were bathed in so pure and bright a light as would have waked the dead, if they had been slumbering in their graves, as some suppose. There needs no stronger proof of immortality. All things must live in such a light. O Death, where was thy sting? O Grave, where was thy victory, then?
    Henry David Thoreau (1817–1862)

    The proof of a poet is that his country absorbs him as affectionately as he has absorbed it.
    Walt Whitman (1819–1892)