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

See also
Mr. O, a Canadian children's music television series