**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:

“Right and *proof* are two crutches for everything bent and crooked that limps along.”

—Franz Grillparzer (1791–1872)

“The fact that several men were able to become infatuated with that latrine is truly the *proof* of the decline of the men of this century.”

—Charles Baudelaire (1821–1867)

“If any *proof* were needed of the progress of the cause for which I have worked, it is here tonight. The presence on the stage of these college women, and in the audience of all those college girls who will some day be the nation’s greatest strength, will tell their own story to the world.”

—Susan B. Anthony (1820–1906)

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