Music
- Zero Hour (band), a progressive metal band
- Zero Hour (Eidolon album), 1996
- Zero Hour (Zero Hour album), 1999
- Zero Hour (Avengers album), 2003
- "Zero Hour", a song on Noir's 2005 soundtrack
- "The Zero Hour", a song on Project One's 2008 album Project One: The Album
- "Hora Zero", a song on Rodrigo y Gabriela's 2009 album 11:11
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