Undo is a command in many computer programs.
Undo or UNDO may also refer to:
Music "Undo" (Rush of Fools song), a 2007 song by American contemporary Christian band Rush of Fools "Undo" (Sanna Nielsen song), a 2014 song by Swedish singer Sanna Nielsen "Undo", a song by Icelandic singer Björk on her fourth studio album Vespertine "UNDO", a song by Japanese rock band Cool Joke, the theme from Fullmetal Alchemist
Others Undo magazine, a Mexican visual design magazine Ukrainian National Democratic Alliance, the largest Ukrainian political party in the Second Polish Republic Undo (company), a software debugging company