70		Five Million Years to Earth (Horror, Mystery, Sci-Fi, 1967)
61		I Married a Monster from Outer Space (Horror, Sci-Fi, 1958)
60		Strange Invaders (Horror, Mystery, Sci-Fi, 1983)
60		Island of the Burning Damned (Horror, Mystery, Sci-Fi, 1967)
60		The Thing (Horror, Mystery, Sci-Fi, 2011)
55		Plan 9 from Outer Space (Horror, Sci-Fi, 1959)
55		The Thing from Another World (Horror, Sci-Fi, 1951)
54		Alien (Horror, Sci-Fi, 1979)
52		Species II (Action, Horror, Sci-Fi, 1998)
51		The Cosmic Monster (Drama, Sci-Fi, Horror, 1958)
51		20 Million Miles to Earth (Fantasy, Horror, Sci-Fi, 1957)
50		Halloween III: Season of the Witch (Horror, Mystery, Sci-Fi, 1982)
50		The Body Stealers (Horror, Mystery, Sci-Fi, 1969)
50		Bug (Sci-Fi, Horror, Mystery, 1975)
47		Alien³ (Action, Horror, Sci-Fi, 1992)
47		Species (Action, Horror, Sci-Fi, 1995)
47		Invasion of the Bee Girls (Horror, Sci-Fi, 1973)
47		Dark Breed (Action, Horror, Sci-Fi, 1996)
47		It Came from Beneath the Sea (Horror, Sci-Fi, 1955)
47		Area 51 (Horror, Sci-Fi, Thriller, 2015)
47		The Thing (Horror, Mystery, Sci-Fi, 1982)
47		Forbidden World (Horror, Sci-Fi, 1982)
47		Tarantula (Horror, Sci-Fi, 1955)
47		It Conquered the World (Horror, Sci-Fi, Thriller, 1956)
47		Jason X (Action, Horror, Sci-Fi, 2001)
46		The Giant Claw (Fantasy, Horror, Sci-Fi, 1957)
46		Not of This Earth (Horror, Sci-Fi, 1957)
46		Phantom from Space (Horror, Sci-Fi, 1953)
46		It Came from Outer Space (Horror, Sci-Fi, 1953)
45		The Man from Planet X (Horror, Romance, Sci-Fi, 1951)
45		Demonwarp (Horror, Mystery, Sci-Fi, 1988)
45		The Return of Doctor X (Horror, Mystery, Sci-Fi, 1939)
45		Unearthed (Horror, Mystery, Sci-Fi, 2007)
45		The Jade Mask (Horror, Mystery, Sci-Fi, 1945)
42		Revenge of the Creature (Horror, Sci-Fi, 1955)
42		Queen of Blood (Horror, Sci-Fi, 1966)
42		Target Earth (Horror, Sci-Fi, 1954)
42		Extraterrestrial (Horror, Sci-Fi, 2014)
42		Creature with the Atom Brain (Crime, Horror, Sci-Fi, 1955)
42		Return of the Ape Man (Horror, Romance, Sci-Fi, 1944)
42		Godzilla, King of the Monsters! (Action, Horror, Sci-Fi, 1956)
42		Goke, Body Snatcher from Hell (Horror, Sci-Fi, 1968)
42		The Quatermass Xperiment (Horror, Sci-Fi, 1955)
42		The Devil Commands (Horror, Sci-Fi, 1941)
42		Project: Metalbeast (Horror, Sci-Fi, 1995)
42		Aliens vs. Predator: Requiem (Action, Horror, Sci-Fi, 2007)
42		Body Snatchers (Sci-Fi, Horror, Thriller, 1993)
42		The Puppet Masters (Horror, Sci-Fi, Thriller, 1994)
42		The Mutations (Horror, Sci-Fi, 1974)
42		Creature (Horror, Sci-Fi, 1985)
42		Xtro (Horror, Sci-Fi, 1982)
42		Village of the Damned (Horror, Sci-Fi, Thriller, 1995)
42		The Blob (Horror, Sci-Fi, Thriller, 1988)
41		Attack of the 50 Foot Woman (Horror, Sci-Fi, 1958)
41		The Blob (Horror, Sci-Fi, 1958)
41		The Brain Eaters (Sci-Fi, Horror, 1958)
41		The Deadly Mantis (Horror, Sci-Fi, Thriller, 1957)
41		Enemy from Space (Sci-Fi, Horror, 1957)
41		The Crawling Eye (Horror, Sci-Fi, 1958)
41		The Monolith Monsters (Drama, Horror, Sci-Fi, 1957)
41		War of the Satellites (Horror, Sci-Fi, 1958)
41		The Colossus of New York (Horror, Sci-Fi, 1958)
40		Altitude (Horror, Mystery, Sci-Fi, 2010)
40		Disturbing Behavior (Horror, Mystery, Sci-Fi, 1998)
40		Chemical Wedding (Horror, Mystery, Sci-Fi, 2008)
40		Strange Behavior (Horror, Mystery, Sci-Fi, 1981)
40		Quarantine 2: Terminal (Horror, Mystery, Sci-Fi, 2011)
40		Brain Dead (Horror, Mystery, Sci-Fi, 1990)
40		Videodrome (Horror, Mystery, Sci-Fi, 1983)
40		Devil's Pass (Horror, Mystery, Sci-Fi, 2013)
40		The Supernaturals (Horror, Mystery, Sci-Fi, 1986)
40		The Relic (Horror, Mystery, Sci-Fi, 1997)
40		Impulse (Horror, Mystery, Sci-Fi, 1984)
40		Decoder (Horror, Mystery, Sci-Fi, 1984)
40		The Stepford Wives (Horror, Mystery, Sci-Fi, 1975)
40		Crawlspace (Horror, Mystery, Sci-Fi, 2012)
40		Shock Waves (Horror, Mystery, Sci-Fi, 1977)
40		Die, Monster, Die! (Mystery, Horror, Sci-Fi, 1965)
40		Dreamland (Sci-Fi, Horror, Mystery, 2007)
40		First Man Into Space (Drama, Horror, Sci-Fi, 1959)
40		Chernobyl Diaries (Horror, Mystery, Sci-Fi, 2012)
40		Castle of Evil (Horror, Mystery, Sci-Fi, 1966)
40		The Vulture (Horror, Mystery, Sci-Fi, 1966)
40		Apollo 18 (Horror, Mystery, Sci-Fi, 2011)
40		Scourge (Horror, Mystery, Sci-Fi, 2008)
40		The Bay (Horror, Mystery, Sci-Fi, 2012)
40		Evidence (Horror, Mystery, Sci-Fi, 2012)
40		The Bermuda Triangle (Horror, Sci-Fi, Mystery, 1978)
40		Flight 7500 (Horror, Mystery, Sci-Fi, 2014)
40		Morgan (Horror, Mystery, Sci-Fi, 2016)
40		Headspace (Horror, Mystery, Sci-Fi, 2005)
40		Cube Zero (Horror, Mystery, Sci-Fi, 2004)
40		The Ring Two (Horror, Mystery, Sci-Fi, 2005)
40		The Lazarus Effect (Horror, Mystery, Sci-Fi, 2015)
39		The Creature Walks Among Us (Horror, 1956)
38		Island of Lost Souls (Horror, Sci-Fi, 1932)
38		Children of the Damned (Horror, Sci-Fi, 1964)
38		Predator (Action, Horror, Sci-Fi, 1987)
38		The Earth Dies Screaming (Horror, Sci-Fi, 1964)
38		The Fly (Drama, Fantasy, Horror, 1958)
38		Invasion of the Body Snatchers (Horror, Sci-Fi, 1956)
38		X: The Man with the X-Ray Eyes (Horror, Sci-Fi, Thriller, 1963)
37		The Invisible Ray (Horror, Sci-Fi, Thriller, 1936)
37		Captive Wild Woman (Horror, Sci-Fi, 1943)
37		Altered (Horror, Sci-Fi, Thriller, 2006)
37		The Uninvited (Fantasy, Horror, Mystery, 1944)
37		Alien Prey (Horror, Sci-Fi, 1977)
37		10 Cloverfield Lane (Drama, Horror, Mystery, 2016)
37		The Dark Side of the Moon (Action, Horror, Sci-Fi, 1990)
37		Hellraiser: Bloodline (Horror, Sci-Fi, 1996)
37		Flight of the Living Dead (Action, Horror, Sci-Fi, 2007)
37		Nightmare City (Action, Horror, Sci-Fi, 1980)
37		Seedpeople (Horror, Sci-Fi, 1992)
37		Without Warning (Sci-Fi, Horror, 1980)
37		Dark Skies (Horror, Sci-Fi, Thriller, 2013)
37		Altered States (Horror, Sci-Fi, Thriller, 1980)
37		Island Claws (Horror, Sci-Fi, 1980)
37		Scanners (Action, Horror, Sci-Fi, 1981)
37		Alien: Resurrection (Action, Horror, Sci-Fi, 1997)
37		The Devil Bat (Horror, Sci-Fi, 1940)
37		Mark of the Vampire (Horror, Mystery, 1935)
37		Victor Frankenstein (Drama, Horror, Sci-Fi, 2015)
37		Curse of the Fly (Drama, Horror, Mystery, 1965)
37		Frankenstein Must Be Destroyed (Horror, Drama, Sci-Fi, 1969)
37		Lifeforce (Action, Horror, Sci-Fi, 1985)
37		Firestarter (Action, Horror, Sci-Fi, 1984)
37		Hollow Man (Action, Horror, Sci-Fi, 2000)
37		The Brain (Horror, Sci-Fi, 1988)
37		Alien Abduction (Horror, Sci-Fi, Thriller, 2014)
37		Phase IV (Horror, Sci-Fi, Thriller, 1974)
37		Creature from the Black Lagoon (Horror, Sci-Fi, 1954)
37		Embryo (Horror, Sci-Fi, 1976)
37		Progeny (Horror, Sci-Fi, Thriller, 1998)
37		Blood Beast from Outer Space (Horror, Sci-Fi, 1965)
37		Moontrap (Horror, Sci-Fi, 1989)
37		The Harvest (Drama, Horror, Mystery, 2013)
37		Another World (Action, Horror, Sci-Fi, 2014)
37		The Fly (Drama, Horror, Sci-Fi, 1986)
37		Invaders from Mars (Horror, Sci-Fi, 1986)
37		Demon Seed (Horror, Sci-Fi, 1977)
37		Dr. Renault's Secret (Horror, Mystery, Romance, 1942)
36		Donovan's Brain (Sci-Fi, Horror, 1953)
36		The Monster That Challenged the World (Horror, Sci-Fi, 1957)
36		The Man Without a Body (Horror, Sci-Fi, 1957)
36		Attack of the Crab Monsters (Horror, Sci-Fi, 1957)
36		The Vampire (Horror, Sci-Fi, Thriller, 1957)
36		The Unknown Terror (Horror, Sci-Fi, 1957)
36		It! The Terror from Beyond Space (Horror, Sci-Fi, 1958)
36		The Abominable Snowman (Adventure, Horror, Sci-Fi, 1957)
35		Last Woman on Earth (Drama, Horror, Mystery, 1960)
35		Jack the Ripper (Crime, Horror, Mystery, 1959)
35		Five (Drama, Horror, Sci-Fi, 1951)
35		Terror Is a Man (Horror, Romance, Sci-Fi, 1959)
35		Invisible Invaders (Sci-Fi, Horror, 1959)
35		4D Man (Sci-Fi, Horror, Romance, 1959)
35		The Hound of the Baskervilles (Horror, Mystery, 1959)
34		The Day of the Triffids (Horror, Sci-Fi, 1962)
34		Mr. Sardonicus (Drama, Horror, Mystery, 1961)
34		Galaxy of Terror (Action, Adventure, Horror, 1981)
34		Gog (Drama, Horror, Romance, 1954)
34		Reptilicus (Action, Horror, Sci-Fi, 1961)
33		The Hound of the Baskervilles (Horror, Mystery, Thriller, 1939)
33		The Last Man on Earth (Horror, Sci-Fi, 1964)
33		Nightmare (Horror, Mystery, Thriller, 1964)
33		Kronos (Action, Drama, Horror, 1957)
33		Dr. Jekyll and Mr. Hyde (Horror, Sci-Fi, 1931)
32		Equinox (Horror, Adventure, Mystery, 1970)
32		The Cannibal in the Jungle (Crime, Horror, Sci-Fi, 2015)
32		Driller (Horror, Sci-Fi, 2006)
32		The Faculty (Horror, Sci-Fi, 1998)
32		Honeymoon (Horror, Mystery, Thriller, 2014)
32		The Green Slime (Drama, Horror, Sci-Fi, 1968)
32		Mad Doctor of Blood Island (Adventure, Horror, Sci-Fi, 1968)
32		Circle (Drama, Horror, Mystery, 2015)
32		The Darkroom (Horror, Mystery, Thriller, 2006)
32		Polymorph (Action, Horror, Sci-Fi, 1996)
32		The Crazies (Action, Horror, Sci-Fi, 1973)
32		Godzilla vs. Destoroyah (Action, Horror, Sci-Fi, 1995)
32		Sssssss (Horror, Sci-Fi, 1973)
32		Breaking Dawn (Horror, Mystery, Thriller, 2004)
32		The Creeping Flesh (Horror, Sci-Fi, 1973)
32		Man Made Monster (Drama, Horror, Sci-Fi, 1941)
32		Not Like Us (Horror, Sci-Fi, 1995)
32		Shivers (Horror, Sci-Fi, 1975)
32		Horror Island (Horror, Mystery, Thriller, 1941)
32		The Island of Dr. Moreau (Horror, Sci-Fi, Thriller, 1996)
32		The Other (Drama, Horror, Mystery, 1972)
32		The Dark (Horror, Sci-Fi, 1979)
32		Malevolence (Crime, Horror, Mystery, 2003)
32		Murders in the Rue Morgue (Crime, Horror, Mystery, 1932)
32		The Deadly Spawn (Horror, Sci-Fi, 1983)
32		Autopsy (Horror, Mystery, Thriller, 2008)
32		Island of Blood (Horror, Mystery, Thriller, 1982)
32		Dreamcatcher (Drama, Horror, Sci-Fi, 2003)
32		Silent Rage (Action, Horror, Sci-Fi, 1982)
32		The Vampire Bat (Drama, Horror, Mystery, 1933)
32		Blackout (Horror, Mystery, Thriller, 2008)
32		Spontaneous Combustion (Horror, Sci-Fi, Thriller, 1990)
32		The Dead Zone (Horror, Sci-Fi, Thriller, 1983)
32		Alien Raiders (Action, Horror, Sci-Fi, 2008)
32		Splice (Drama, Horror, Sci-Fi, 2009)
32		Pandorum (Action, Horror, Mystery, 2009)
32		The Kindred (Horror, Sci-Fi, Thriller, 1987)
32		Jack's Back (Crime, Horror, Mystery, 1988)
32		Transformations (Horror, Sci-Fi, 1988)
32		Nomads (Horror, Mystery, Thriller, 1986)
32		They Live (Horror, Sci-Fi, Thriller, 1988)
32		Godzilla 1985 (Action, Horror, Sci-Fi, 1984)
32		Phenomena (Horror, Mystery, 1985)
32		Swamp Thing (Horror, Sci-Fi, 1982)
32		Unaware (Horror, Sci-Fi, Thriller, 2010)
32		Slaughter of the Innocents (Crime, Horror, Mystery, 1993)
32		The Alien Factor (Horror, Sci-Fi, 1978)
32		I Am Legend (Drama, Horror, Sci-Fi, 2007)
32		Patrick (Horror, Romance, Sci-Fi, 1978)
32		Antiviral (Horror, Sci-Fi, Thriller, 2012)
32		Coma (Drama, Horror, Mystery, 1978)
32		AVP: Alien vs. Predator (Action, Horror, Sci-Fi, 2004)
32		Resident Evil: Extinction (Action, Horror, Sci-Fi, 2007)
32		Terror of Frankenstein (Horror, Sci-Fi, 1977)
32		Invisible: The Chronicles of Benjamin Knight (Action, Horror, Sci-Fi, 1993)
32		Condemned to Live (Drama, Horror, Mystery, 1935)
32		Godsend (Drama, Horror, Sci-Fi, 2004)
32		Steel and Lace (Action, Horror, Sci-Fi, 1991)
32		Dr. Jekyll and Mr. Hyde (Drama, Horror, Sci-Fi, 1920)
32		Predator 2 (Action, Horror, Sci-Fi, 1990)
32		Roger Corman's Frankenstein Unbound (Drama, Horror, Sci-Fi, 1990)
32		The Arrival (Horror, Sci-Fi, 1991)
32		The Millennium Bug (Horror, Sci-Fi, Thriller, 2011)
32		Room 6 (Horror, Mystery, Thriller, 2006)
32		The Lawnmower Man (Horror, Sci-Fi, 1992)
32		Bikini Island (Horror, Mystery, Thriller, 1991)
32		The Premonition (Horror, Sci-Fi, Thriller, 1976)
32		Under the Skin (Drama, Horror, Sci-Fi, 2013)
32		The Lady and the Monster (Horror, Sci-Fi, Thriller, 1944)
32		Slugs (Horror, Sci-Fi, 1988)
32		House on Haunted Hill (Horror, Mystery, Thriller, 1999)
32		Bride of the Monster (Horror, Sci-Fi, 1955)
32		Ghosts of Mars (Action, Horror, Sci-Fi, 2001)
32		Fog Island (Drama, Horror, Mystery, 1945)
32		Pitch Black (Horror, Sci-Fi, 2000)
32		The Black Sleep (Horror, Sci-Fi, 1956)
32		Day the World Ended (Horror, Sci-Fi, 1955)
32		Dementia (Film-Noir, Horror, Mystery, 1955)
32		The Werewolf (Sci-Fi, Horror, 1956)
32		The Gamma People (Drama, Horror, Sci-Fi, 1956)
32		Frankenstein Meets the Wolf Man (Fantasy, Horror, Sci-Fi, 1943)
32		Night Monster (Horror, Mystery, Thriller, 1942)
32		Isle of the Dead (Drama, Horror, Mystery, 1945)
32		Them! (Horror, Sci-Fi, 1954)
32		Woman Who Came Back (Horror, Mystery, 1945)
32		Curse of the Demon (Fantasy, Horror, Mystery, 1957)
32		X the Unknown (Horror, Sci-Fi, 1956)
32		The Mad Ghoul (Horror, Sci-Fi, Thriller, 1943)
32		The Beast of Hollow Mountain (Horror, Romance, Sci-Fi, 1956)
32		The Frozen Dead (Sci-Fi, Horror, 1966)
32		Psycho (Horror, Mystery, Thriller, 1960)
32		Phantom of the Rue Morgue (Crime, Horror, Mystery, 1954)
32		The Mad Magician (Horror, Thriller, Mystery, 1954)
32		The Incredible Shrinking Man (Drama, Horror, Sci-Fi, 1957)

Notes: Movies similar to This Island Earth, Movies like This Island Earth, Horror, Mystery, Sci-Fi, Joseph M. Newman, Jeff Morrow, Faith Domergue, Rex Reason, Lance Fuller, Films, Video, Movie Similarities