- Macabre ( 1958 ) Horror, Thriller
- Macabre ( 1980 ) Horror
- Macabre ( 2009 ) Foreign, Horror, Thriller
- Mad Doctor of Blood Island ( 1969 ) Adventure, Horror, Science Fiction
- Mad Foxes ( 1981 ) Action, Crime, Horror, Thriller
- Mad Love ( 1935 ) Comedy, Horror
- Mad Monster Party? ( 1967 ) Comedy, Family, Horror
- Mad Ron's Prevues from Hell ( 1987 ) Horror
- Madhouse ( 1974 ) Crime, Horror, Mystery, Thriller
- Madhouse ( 1981 ) Horror
- Madhouse ( 2004 ) Horror, Thriller
- Madison County ( 2012 ) Horror, Mystery, Thriller
- Madman ( 1982 ) Horror, Thriller
- Maggie ( 2015 ) Horror
- Magic ( 1978 ) Drama, Horror, Thriller
- Make-Out with Violence ( 2008 ) Comedy, Fantasy, Horror, Romance
- Making Contact ( 1985 ) Adventure, Fantasy, Horror, Science Fiction
- Mako: The Jaws of Death ( 1976 ) Horror, Thriller
- Maléfique ( 2002 ) Fantasy, Horror, Mystery
- Malibu Shark Attack ( 2009 ) Horror
- Mama ( 2013 ) Horror
- Mammoth ( 2006 ) Action, Comedy, Horror, Science Fiction
- Man Bites Dog ( 1992 ) Comedy, Crime, Drama, Horror
- Man from Deep River ( 1972 ) Adventure, Horror
- Man Made Monster ( 1941 ) Horror, Science Fiction
- Man of Her Dreams ( 1997 ) Drama, Horror
- Man's Best Friend ( 1993 ) Horror, Science Fiction, Thriller
- Man-Thing ( 2005 ) Action, Horror, Science Fiction
- Man Vs. ( 2015 ) Horror, Science Fiction, Thriller
- Man with the Screaming Brain ( 2005 ) Comedy, Horror, Science Fiction
- Man Without a Memory ( 1974 ) Action, Crime, Drama, Foreign, Horror, Thriller
- Manborg ( 2011 ) Horror, Science Fiction
- Mandrake ( 2010 ) Horror, Science Fiction, Thriller
- Mandroid ( 1993 ) Action, Horror, Science Fiction
- Manhattan Baby ( 1982 ) Horror
- Manhole ( 2014 ) Horror, Thriller
- Manhunt ( 2008 ) Horror, Thriller
- Manhunter ( 1986 ) Crime, Horror, Thriller
- Maniac ( 1934 ) Horror
- Maniac ( 1963 ) Comedy, Horror, Thriller
- Maniac ( 1980 ) Horror
- Maniac ( 2012 ) Horror
- Maniac Cop ( 1988 ) Action, Horror, Thriller
- Maniac Cop 2 ( 1990 ) Action, Horror, Thriller
- Maniac Cop 3: Badge of Silence ( 1993 ) Action, Adventure, Horror
- Manichitrathazhu ( 1993 ) Fantasy, Horror, Mystery, Thriller
- Manos: The Hands of Fate ( 1966 ) Horror
- Mansion of the Doomed ( 1976 ) Horror
- Mansquito ( 2005 ) Horror, Science Fiction
- Mantis in Lace ( 1968 ) Horror, Thriller
- Marianne ( 2011 ) Drama, Fantasy, Horror, Mystery, Thriller
- Mark of the Astro-Zombies ( 2002 ) Horror, Science Fiction
- Mark of the Devil ( 1970 ) Drama, History, Horror, Thriller
- Mark of the Vampire ( 1935 ) Horror, Mystery
- Mark of the Witch ( 1970 ) Horror
- Marquis de Sade: Justine ( 1969 ) Drama, Horror
- Mars Needs Women ( 1967 ) Horror, Science Fiction, TV Movie
- Mars of Destruction ( 2005 ) Animation, Horror, Science Fiction
- Martin ( 1978 ) Horror
- Martyrs ( 2008 ) Drama, Horror, Thriller
- Martyrs ( 2016 ) Drama, Horror, Thriller
- Mary Loss of Soul ( 2015 ) Drama, Horror, Mystery, Thriller
- Mary Reilly ( 1996 ) Drama, Horror, Romance, Thriller
- Mary Shelley's Frankenstein ( 1994 ) Drama, Horror, Romance, Science Fiction
- Mask Maker ( 2010 ) Horror
- Massacre at Central High ( 1976 ) Drama, Horror, Thriller
- Massacre in Dinosaur Valley ( 1985 ) Action, Adventure, Horror
- Massu Engira Maasilamani ( 2015 ) Comedy, Horror, Thriller
- Matango: Attack of the Mushroom People ( 1963 ) Fantasy, Horror, Science Fiction
- Maximum Overdrive ( 1986 ) Action, Drama, Horror, Science Fiction
- May ( 2002 ) Drama, Horror, Romance, Thriller
- Meatball Machine ( 2005 ) Foreign, Horror, Science Fiction
- Medium Raw ( 2010 ) Fantasy, Horror, Thriller
- Meet the Blacks ( 2016 ) Comedy, Horror
- Mega Piranha ( 2010 ) Action, Adventure, Horror, Science Fiction
- Mega Python vs. Gatoroid ( 2011 ) Action, Horror, Science Fiction
- Mega Shark vs. Crocosaurus ( 2010 ) Action, Horror, Science Fiction
- Mega Shark vs Giant Octopus ( 2009 ) Horror, Science Fiction
- Mega Snake ( 2007 ) Horror
- Megan is Missing ( 2011 ) Drama, Horror, Mystery, Thriller
- Mercy ( 2014 ) Horror, Thriller
- Merlin's Shop of Mystical Wonders ( 1996 ) Fantasy, Horror
- Mermaid Chronicles Part 1: She Creature ( 2001 ) Horror
- Messages Deleted ( 2009 ) Horror, Mystery, Thriller
- Messiah of Evil ( 1973 ) Horror, Mystery
- Metamorphosis ( 1990 ) Horror, Science Fiction
- Metamorphosis : The Alien Factor ( 1990 ) Horror, Science Fiction
- Miami Golem ( 1985 ) Action, Horror, Science Fiction
- Michael Jackson's Thriller ( 1983 ) Horror, Music
- Microwave Massacre ( 1983 ) Horror
- Midnight ( 1982 ) Comedy, Horror, Romance
- Midnight Movie ( 2008 ) Horror
- Midnight Ride ( 1990 ) Action, Horror, Thriller
- Midnight Son ( 2011 ) Action, Drama, Horror
- Midori ( 1992 ) Animation, Drama, Horror
- Midsummer ( 2003 ) Drama, Horror, Mystery, Thriller
- Mikey ( 1992 ) Horror, Thriller
- Mill of the Stone Women ( 1960 ) Horror, Science Fiction
- Million Dollar Crocodile ( 2012 ) Crime, Drama, Horror, Thriller
- Mimesis ( 2011 ) Horror
- Mimic ( 1997 ) Fantasy, Horror, Thriller
- Mimic 2 ( 2001 ) Horror, Science Fiction, Thriller
- Mimic: Sentinel ( 2003 ) Horror, Science Fiction, Thriller
- Mindwarp ( 1992 ) Horror, Science Fiction, Thriller
- Mirror Mirror ( 1990 ) Horror
- Mirrors 2 ( 2010 ) Horror, Mystery, Thriller
- Mirrors ( 2008 ) Horror, Mystery, Thriller
- Mischief Night ( 2013 ) Drama, Horror, Thriller
- Mischief Night ( 2014 ) Horror
- Miss Zombie ( 2013 ) Drama, Horror
- Moby Dick ( 2011 ) Action, Horror, Thriller
- Mockingbird ( 2014 ) Horror
- Modern Vampires ( 1998 ) Action, Comedy, Horror, Romance, Thriller
- Mom ( 1991 ) Comedy, Horror
- Mommy ( 1995 ) Horror
- Mongolian Death Worm ( 2010 ) Horror, Science Fiction, TV Movie
- Monkey Shines ( 1988 ) Drama, Horror, Science Fiction, Thriller
- Monster ( 2008 ) Action, Horror, Science Fiction
- Monster ( 2014 ) Horror
- Monster a-Go Go ( 1965 ) Horror, Science Fiction
- Monster Brawl ( 2011 ) Comedy, Horror
- Monster Dog ( 1984 ) Foreign, Horror
- Monster High ( 1989 ) Comedy, Horror, Science Fiction
- Monster Hunter ( 1981 ) Horror
- Monster in the Closet ( 1986 ) Horror
- Monster Island ( 2004 ) Adventure, Comedy, Horror
- Monsterwolf ( 2010 ) Fantasy, Horror, TV Movie
- Monstrosity ( 1963 ) Horror, Science Fiction
- Monsturd ( 2003 ) Horror, Science Fiction
- Moon Child ( 2003 ) Action, Foreign, Horror, Science Fiction, Thriller
- Moon of the Wolf ( 1972 ) Horror, Mystery, Thriller
- Moontrap ( 1989 ) Horror, Science Fiction
- Morgan ( 2016 ) Horror, Science Fiction, Thriller
- Morgana ( 2012 ) Horror
- Mortuary ( 1983 ) Horror
- Mortuary ( 2005 ) Horror, Mystery, Thriller
- Mosquito ( 1995 ) Horror, Science Fiction
- Most Likely to Die ( 2015 ) Horror
- Mostly Ghostly ( 2008 ) Family, Fantasy, Horror
- Mostly Ghostly 3: One Night in Doom House ( 2016 ) Family, Fantasy, Horror
- Mostly Ghostly: Have You Met My Ghoulfriend? ( 2014 ) Family, Fantasy, Horror
- Motel Hell ( 1980 ) Comedy, Horror
- Mother Joan of the Angels ( 1961 ) Drama, Horror
- Mother's Day ( 1980 ) Action, Comedy, Horror
- Mother's Day ( 2010 ) Crime, Drama, Horror, Thriller
- Mothman ( 2010 ) Horror, Science Fiction
- Mountaintop Motel Massacre ( 1986 ) Horror, Thriller
- Mourning Grave ( 2014 ) Comedy, Horror, Romance, Thriller
- Mr. Hush ( 2010 ) Horror
- Mr. Jones ( 2013 ) Drama, Horror, Thriller
- Mr. Sardonicus ( 1961 ) Horror
- Mr. Vampire ( 1985 ) Action, Comedy, Horror
- Mr. Vampire 2 ( 1986 ) Action, Comedy, Horror
- Ms .45 ( 1981 ) Crime, Drama, Horror, Thriller
- Muck ( 2015 ) Horror
- Mud Zombies ( 2008 ) Horror
- Mulberry Street ( 2006 ) Horror
- Multiple Maniacs ( 1970 ) Comedy, Crime, Horror
- Mum & Dad ( 2008 ) Horror, Thriller
- Mumsy, Nanny, Sonny & Girly ( 1970 ) Comedy, Crime, Horror
- Munchies ( 1987 ) Comedy, Horror, Science Fiction
- Murder by Natural Causes ( 1979 ) Crime, Horror, Mystery, TV Movie
- Murder by Phone ( 1982 ) Horror, Mystery, Science Fiction, Thriller
- Murder in the Dark ( 2013 ) Horror, Mystery, Thriller
- Murder Obsession ( 1981 ) Horror, Mystery
- Murder Party ( 2007 ) Comedy, Horror
- Murder-Rock: Dancing Death ( 1984 ) Horror, Thriller
- Murders in the Rue Morgue ( 1932 ) Crime, Horror, Mystery, Romance
- Murders in the Rue Morgue ( 1971 ) Crime, Drama, Horror, Thriller
- Murders in the Zoo ( 1933 ) Crime, Horror
- Mutant Chronicles ( 2008 ) Action, Adventure, Horror, Science Fiction
- Mutant Hunt ( 1987 ) Action, Horror, Science Fiction, Thriller
- Mutants ( 2008 ) Action, Foreign, Horror, Science Fiction
- Mutants ( 2009 ) Horror, Science Fiction
- Mutator ( 1989 ) Horror, Science Fiction
- My Amityville Horror ( 2013 ) Documentary, Horror
- My Bloody Valentine ( 1981 ) Horror, Mystery, Thriller
- My Bloody Valentine ( 2009 ) Horror, Mystery
- My Demon Lover ( 1987 ) Comedy, Fantasy, Horror, Romance
- My Friends Need Killing ( 1976 ) Crime, Drama, Horror
- My Left Eye Sees Ghosts ( 2002 ) Comedy, Fantasy, Foreign, Horror, Science Fiction
- My Little Eye ( 2002 ) Horror, Thriller
- My Mom's a Werewolf ( 1989 ) Comedy, Horror
- My Name Is Bruce ( 2007 ) Comedy, Horror
- My Soul to Take ( 2010 ) Drama, Horror, Mystery, Thriller
- My Sucky Teen Romance ( 2011 ) Comedy, Horror, Romance
- My Super Psycho Sweet 16 ( 2009 ) Horror
- Mystery of Edwin Drood ( 1935 ) Drama, Horror, Mystery, Romance
- Mystery of the Wax Museum ( 1933 ) Horror, Mystery, Thriller
- Mystery on Monster Island ( 1981 ) Adventure, Comedy, Horror
- Mystics in Bali ( 1981 ) Horror, Mystery
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