Mr. Zero

Mr. Zero may refer to:
 * Mr. Freeze or Mr. Zero, a character in comic books published by DC Comics
 * "Mr. Zero" (song), a song by Keith Relf
 * Mr. Zero, an alias of Urbain Ledoux (1874-1941), activist for the unemployed
 * Mister Zero, pseudonym of John Picard, guitarist in the Canadian band The Kings
 * Mr. Zero, the protagonist of the play The Adding Machine by Elmer Rice
 * Mr. 0, an alias of Sir Crocodile, an antagonist from the manga One Piece