Movies in the Horror genre

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  Oh My Zombie Mermaid

  2004

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  Ok-Nyeo's Resentment

  1972

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  Okinawan Horror: Upside-Down Ghost - Chinese Horror: Breaking a Coffin

  1962

• 

  Old Hag

  2007

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  Olga's Girls

  1964

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  Om Shanthi Om

  2015

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  Ombis: Alien Invasion

  2013

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  Omen

  2003

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  Omen III: The Final Conflict

  1981

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  Omen IV: The Awakening

  1991

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  Ominous

  2009

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  Ominous

  2015

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  Omnívoros

  2013

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  On Air

  2012

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  On Bloody Sunday

  2007

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  On Edge

  1999

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  On Evil Grounds

  2007

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  On the Third Day

  1983

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  Once Bitten

  1985

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  Once Upon a Time

  1974

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  One Dark Night

  1983

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  One Frightened Night

  1935

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  One in a Million

  1986

• 

  One Million B.C.

  1940