99		It Came from Outer Space (Horror, Sci-Fi, 1953)
99		Alien (Horror, Sci-Fi, 1979)
99		Invasion of the Body Snatchers (Horror, Sci-Fi, 1956)
95		Invasion of the Body Snatchers (Horror, Sci-Fi, 1978)
94		The Man from Planet X (Horror, Romance, Sci-Fi, 1951)
87		They Live (Horror, Sci-Fi, Thriller, 1988)
85		It! The Terror from Beyond Space (Horror, Sci-Fi, 1958)
85		Plan 9 from Outer Space (Horror, Sci-Fi, 1959)
82		Lifeforce (Action, Horror, Sci-Fi, 1985)
82		The Puppet Masters (Horror, Sci-Fi, Thriller, 1994)
82		The Thing (Horror, Mystery, Sci-Fi, 2011)
80		The Arrival (Sci-Fi, Thriller, 1996)
80		Without Warning (Sci-Fi, Horror, 1980)
80		The Blob (Horror, Sci-Fi, 1958)
80		Xtro (Horror, Sci-Fi, 1982)
80		Invaders from Mars (Horror, Sci-Fi, 1986)
79		The Thing (Horror, Mystery, Sci-Fi, 1982)
79		Earth vs. the Flying Saucers (Action, Sci-Fi, 1956)
79		Village of the Damned (Horror, Sci-Fi, 1960)
78		Invaders from Mars (Sci-Fi, 1953)
77		Alien³ (Action, Horror, Sci-Fi, 1992)
75		Enemy from Space (Sci-Fi, Horror, 1957)
75		Invisible Invaders (Sci-Fi, Horror, 1959)
74		The Leech Woman (Horror, Sci-Fi, 1960)
72		Radar Men from the Moon (Action, Sci-Fi, 1952)
72		Species II (Action, Horror, Sci-Fi, 1998)
70		The Brain Eaters (Sci-Fi, Horror, 1958)
70		Creature (Horror, Sci-Fi, 1985)
70		Forbidden World (Horror, Sci-Fi, 1982)
70		Pitch Black (Horror, Sci-Fi, 2000)
70		Velocity Trap (Action, Sci-Fi, 1999)
69		The Quatermass Xperiment (Horror, Sci-Fi, 1955)
67		The Fly (Drama, Horror, Sci-Fi, 1986)
67		Dark Breed (Action, Horror, Sci-Fi, 1996)
65		The Invasion (Sci-Fi, Thriller, 2007)
65		Galaxy of Terror (Action, Adventure, Horror, Sci-Fi, 1981)
65		The Alien Factor (Horror, Sci-Fi, 1978)
65		The Dark (Horror, Sci-Fi, 1979)
65		The Brood (Horror, Sci-Fi, 1979)
65		Silent Running (Drama, Sci-Fi, 1972)
65		Extraterrestrial (Horror, Sci-Fi, 2014)
65		The Woman Eater (Horror, Sci-Fi, 1958)
65		Monsters vs. Aliens (Animation, Action, Adventure, Sci-Fi, 2009)
65		Goke, Body Snatcher from Hell (Horror, Sci-Fi, 1968)
65		Not of This Earth (Horror, Sci-Fi, 1957)
64		The Mysterians (Action, Sci-Fi, Thriller, 1957)
64		Forbidden Planet (Action, Adventure, Sci-Fi, 1956)
63		Creature from the Black Lagoon (Horror, Sci-Fi, 1954)
62		The War of the Worlds (Action, Sci-Fi, Thriller, 1953)
62		The Stepford Wives (Horror, Mystery, Sci-Fi, 1975)
62		Blood Beast from Outer Space (Horror, Sci-Fi, 1965)
62		Village of the Damned (Horror, Sci-Fi, Thriller, 1995)
62		Body Snatchers (Sci-Fi, Horror, Thriller, 1993)
62		Strange Invaders (Horror, Mystery, Sci-Fi, 1983)
62		Area 51 (Horror, Sci-Fi, Thriller, 2015)
61		This Island Earth (Horror, Mystery, Sci-Fi, 1955)
61		Close Encounters of the Third Kind (Drama, Sci-Fi, 1977)
61		Queen of Blood (Horror, Sci-Fi, 1966)
60		War of the Satellites (Horror, Sci-Fi, 1958)
60		Attack of the 50 Foot Woman (Horror, Sci-Fi, 1958)
60		The Brain (Horror, Sci-Fi, 1988)
60		Moontrap (Horror, Sci-Fi, 1989)
59		Star Trek: Insurrection (Action, Adventure, Sci-Fi, 1998)
59		Independence Day (Action, Adventure, Sci-Fi, 1996)
58		Five Million Years to Earth (Horror, Mystery, Sci-Fi, 1967)
58		The Day of the Triffids (Horror, Sci-Fi, 1962)
58		Target Earth (Horror, Sci-Fi, 1954)
58		Phantom from Space (Horror, Sci-Fi, 1953)
57		Altered (Horror, Sci-Fi, Thriller, 2006)
57		Aliens vs. Predator: Requiem (Action, Horror, Sci-Fi, 2007)
57		The Earth Dies Screaming (Horror, Sci-Fi, 1964)
57		Alien: Resurrection (Action, Horror, Sci-Fi, 1997)
57		Resident Evil: Apocalypse (Action, Horror, Sci-Fi, 2004)
57		Zombies of the Stratosphere (Action, Sci-Fi, 1952)
57		The Thing from Another World (Horror, Sci-Fi, 1951)
57		Jason X (Action, Horror, Sci-Fi, 2001)
57		The Invisible Ray (Horror, Sci-Fi, Thriller, 1936)
56		They Came from Beyond Space (Adventure, Sci-Fi, 1967)
55		Starman (Romance, Sci-Fi, 1984)
55		The Angry Red Planet (Adventure, Sci-Fi, 1959)
55		The Cyclops (Horror, Sci-Fi, 1957)
55		The Fifth Element (Action, Adventure, Sci-Fi, 1997)
55		The Host (Action, Adventure, Romance, Sci-Fi, 2013)
55		Pandorum (Action, Horror, Mystery, Sci-Fi, 2009)
55		The Purple Monster Strikes (Action, Sci-Fi, 1945)
55		Seedpeople (Horror, Sci-Fi, 1992)
55		Titan A.E. (Animation, Action, Adventure, Sci-Fi, 2000)
55		Alien Factor 2: The Alien Rampage (Horror, Sci-Fi, 2001)
55		The Deadly Spawn (Horror, Sci-Fi, 1983)
55		The Brain Leeches (Horror, Sci-Fi, 1978)
54		Alien Nation (Action, Crime, Sci-Fi, 1988)
54		I Am Number Four (Action, Adventure, Sci-Fi, 2011)
54		Independence Day: Resurgence (Action, Adventure, Sci-Fi, 2016)
54		Moon 44 (Action, Sci-Fi, Thriller, 1990)
53		Predator (Action, Horror, Sci-Fi, 1987)
52		The Crazies (Action, Horror, Sci-Fi, 1973)
52		The Monolith Monsters (Drama, Horror, Sci-Fi, 1957)
52		Predator 2 (Action, Horror, Sci-Fi, 1990)
52		The Green Slime (Drama, Horror, Sci-Fi, 1968)
52		The Faculty (Horror, Mystery, Sci-Fi, 1998)
51		Invasion (Sci-Fi, 1966)
50		Battle for Terra (Animation, Action, Adventure, Sci-Fi, 2007)
50		Monster on the Campus (Horror, Sci-Fi, 1958)
50		Driller (Horror, Sci-Fi, 2006)
50		District 9 (Action, Sci-Fi, Thriller, 2009)
50		How to Make a Monster (Horror, Sci-Fi, 1958)
50		Virus (Action, Horror, Thriller, Sci-Fi, 1999)
50		The Monster That Challenged the World (Horror, Sci-Fi, 1957)
50		Not Like Us (Horror, Sci-Fi, 1995)
50		Children of the X-Files (Horror, Sci-Fi, 2009)
50		Gattaca (Drama, Sci-Fi, Thriller, 1997)
50		The Monster of Piedras Blancas (Horror, Sci-Fi, 1959)
50		Attack of the Crab Monsters (Horror, Sci-Fi, 1957)
50		Serenity (Action, Adventure, Sci-Fi, 2005)
50		Alien Prey (Horror, Sci-Fi, 1977)
50		Heavy Metal (Animation, Adventure, Fantasy, Sci-Fi, 1981)
50		The Darkest Hour (Action, Adventure, Horror, Sci-Fi, 2011)
50		Stranded (Sci-Fi, 1987)
50		Escape from the Planet of the Apes (Action, Sci-Fi, 1971)
49		Bride of the Monster (Horror, Sci-Fi, 1955)
49		Cowboys & Aliens (Action, Sci-Fi, Thriller, 2011)
49		Battle Beyond the Stars (Action, Adventure, Sci-Fi, 1980)
49		Predators (Action, Adventure, Sci-Fi, 2010)
48		Island of the Burning Damned (Horror, Mystery, Sci-Fi, 1967)
47		The Cosmic Monster (Drama, Sci-Fi, Horror, 1958)
47		Phantasm (Fantasy, Horror, Sci-Fi, 1979)
47		AVP: Alien vs. Predator (Action, Horror, Sci-Fi, 2004)
47		Cabin Fever: Patient Zero (Horror, Sci-Fi, Thriller, 2014)
47		Ghosts of Mars (Action, Horror, Sci-Fi, 2001)
47		Alien Abduction (Horror, Sci-Fi, Thriller, 2014)
47		20 Million Miles to Earth (Fantasy, Horror, Sci-Fi, 1957)
47		First Man Into Space (Drama, Horror, Sci-Fi, 1959)
46		When Worlds Collide (Action, Sci-Fi, Thriller, 1951)
46		Flying Disc Man from Mars (Action, Adventure, Crime, Sci-Fi, 1950)
46		It Conquered the World (Horror, Sci-Fi, Thriller, 1956)
46		Horror Hotel the Movie (Horror, Sci-Fi, 2016)
45		Deep Space (Horror, Sci-Fi, 1988)
45		The Spider (Horror, Sci-Fi, 1958)
45		Killer School Girls from Outer Space (Horror, Sci-Fi, 2011)
45		Transformations (Horror, Sci-Fi, 1988)
45		The Crawling Eye (Horror, Sci-Fi, 1958)
45		Battle in Outer Space (Sci-Fi, 1959)
45		Hellraiser: Bloodline (Horror, Sci-Fi, 1996)
45		The Arrival (Horror, Sci-Fi, 1991)
45		Species (Action, Horror, Romance, Sci-Fi, 1995)
45		The Man Who Fell to Earth (Sci-Fi, Drama, 1976)
45		Highlander II: The Quickening (Action, Adventure, Fantasy, Sci-Fi, 1991)
45		Hunting Grounds (Horror, Sci-Fi, 2009)
45		Spacebong Beach Babes (Sci-Fi, 2010)
45		The Manster (Horror, Sci-Fi, 1959)
45		The Wasp Woman (Horror, Sci-Fi, 1959)
45		The Andromeda Strain (Sci-Fi, Thriller, 1971)
45		The Alligator People (Horror, Sci-Fi, 1959)
45		Planet of Dinosaurs (Sci-Fi, Drama, 1977)
45		The Black Scorpion (Horror, Sci-Fi, 1957)
45		She Demons (Horror, Sci-Fi, 1958)
45		Mars Attacks the World (Romance, Sci-Fi, 1938)
45		She Devil (Horror, Sci-Fi, 1957)
45		The Man Who Turned to Stone (Horror, Sci-Fi, 1957)
45		The Drift (Horror, Sci-Fi, 2014)
45		The Curse of Frankenstein (Horror, Sci-Fi, 1957)
45		The Monster Maker (Horror, Sci-Fi, 1944)
45		The Unknown Terror (Horror, Sci-Fi, 1957)
45		The 27th Day (Sci-Fi, 1957)
45		Attack of the Puppet People (Sci-Fi, Horror, 1958)
45		I Was a Teenage Frankenstein (Horror, Sci-Fi, 1957)
45		Blood of the Vampire (Horror, Sci-Fi, 1958)
45		The Man Without a Body (Horror, Sci-Fi, 1957)
45		Frankenstein 1970 (Horror, Sci-Fi, 1958)
45		Fiend Without a Face (Horror, Sci-Fi, 1958)
45		The Colossus of New York (Horror, Sci-Fi, 1958)
44		Sunshine (Adventure, Sci-Fi, Thriller, 2007)
44		It Came from Beneath the Sea (Horror, Sci-Fi, 1955)
44		Tarantula (Horror, Sci-Fi, 1955)
44		Time Runner (Action, Adventure, Sci-Fi, 1993)
44		The Werewolf (Sci-Fi, Horror, 1956)
44		Flash Gordon Conquers the Universe (Action, Sci-Fi, Adventure, 1940)
44		Day the World Ended (Horror, Sci-Fi, 1955)
44		The Last Starfighter (Action, Adventure, Sci-Fi, 1984)
44		The 5th Wave (Action, Adventure, Sci-Fi, 2016)
44		The Black Sleep (Horror, Sci-Fi, 1956)
44		Flash Gordon (Action, Adventure, Sci-Fi, 1980)
44		Monsters: Dark Continent (Drama, Sci-Fi, Thriller, 2014)
44		The Fourth Kind (Mystery, Sci-Fi, Thriller, 2009)
44		The Creature Walks Among Us (Horror, Sci-Fi, 1956)
44		Transformers: Revenge of the Fallen (Action, Adventure, Sci-Fi, 2009)
44		Space Raiders (Action, Adventure, Sci-Fi, 1983)
44		Revenge of the Creature (Horror, Sci-Fi, 1955)
44		X the Unknown (Horror, Sci-Fi, 1956)
43		Killer Ape (Adventure, Sci-Fi, 1953)
43		Devil Girl from Mars (Sci-Fi, 1954)
43		Donovan's Brain (Sci-Fi, Horror, 1953)
43		Them! (Horror, Sci-Fi, 1954)
43		Unearthly Stranger (Horror, Sci-Fi, 1963)
43		Varan the Unbelievable (Horror, Sci-Fi, 1962)
43		The Creature Below (Horror, Sci-Fi, 2016)
43		Spaceways (Sci-Fi, 1953)
43		The Neanderthal Man (Horror, Sci-Fi, 1953)
43		The Brain That Wouldn't Die (Horror, Sci-Fi, 1962)
43		Hand of Death (Horror, Sci-Fi, 1962)
43		The Maze (Horror, Sci-Fi, 1953)
43		The Day the Earth Stood Still (Drama, Sci-Fi, 1951)

Notes: Movies similar to I Married a Monster from Outer Space, Movies like I Married a Monster from Outer Space, Horror, Sci-Fi, Gene Fowler Jr., Tom Tryon, Gloria Talbott, Peter Baldwin, Robert Ivers, SF, Science Fiction, SciFi, Sci Fi, Films, Video, Movie Similarities