84		Tarantula (Horror, Sci-Fi, 1955)
82		Godzilla, King of the Monsters! (Action, Horror, Sci-Fi, 1956)
80		The Curse of Frankenstein (Horror, Sci-Fi, 1957)
79		Creature from the Black Lagoon (Horror, Sci-Fi, 1954)
75		It! The Terror from Beyond Space (Horror, Sci-Fi, 1958)
75		Slugs (Horror, Sci-Fi, 1988)
72		Gorgo (Action, Drama, Horror, 1961)
72		The Thing (Horror, Mystery, Sci-Fi, 2011)
70		The Monster That Challenged the World (Horror, Sci-Fi, 1957)
70		How to Make a Monster (Horror, Sci-Fi, 1958)
69		The Island of Dr. Moreau (Adventure, Fantasy, Horror, 1977)
69		It Came from Beneath the Sea (Horror, Sci-Fi, 1955)
67		The Thing from Another World (Horror, Sci-Fi, 1951)
67		The Abominable Snowman (Adventure, Horror, Sci-Fi, 1957)
67		Cabin Fever: Patient Zero (Horror, Sci-Fi, Thriller, 2014)
67		The Island of Dr. Moreau (Horror, Sci-Fi, Thriller, 1996)
65		The Beast from 20,000 Fathoms (Adventure, Horror, Sci-Fi, 1953)
65		Frankenstein 1970 (Horror, Sci-Fi, 1958)
65		Reptilicus (Action, Horror, Sci-Fi, 1961)
65		She Demons (Horror, Sci-Fi, 1958)
65		The Devil Commands (Horror, Sci-Fi, 1941)
64		Revenge of the Creature (Horror, Sci-Fi, 1955)
62		Roger Corman's Frankenstein Unbound (Drama, Horror, Sci-Fi, 1990)
62		The Last Man on Earth (Horror, Sci-Fi, 1964)
62		Godzilla 1985 (Action, Horror, Sci-Fi, 1984)
62		Children of the Damned (Horror, Sci-Fi, 1964)
62		Five Million Years to Earth (Horror, Mystery, Sci-Fi, 1967)
61		Island of Terror (Horror, 1966)
60		The Woman Eater (Horror, Sci-Fi, 1958)
60		The Blob (Horror, Sci-Fi, 1958)
60		Prophecy (Sci-Fi, Horror, 1979)
60		The Devil Bat (Horror, Sci-Fi, 1940)
60		Horror Express (Horror, Sci-Fi, 1972)
60		The Lawnmower Man (Horror, Sci-Fi, 1992)
59		The Cave (Adventure, Horror, Thriller, 2005)
59		The Monster of Piedras Blancas (Horror, Sci-Fi, 1959)
58		Frankenstein (Drama, Horror, Sci-Fi, 1931)
58		Hand of Death (Horror, Sci-Fi, 1962)
57		It Conquered the World (Horror, Sci-Fi, Thriller, 1956)
57		Man Made Monster (Drama, Horror, Sci-Fi, 1941)
57		House of Dracula (Fantasy, Horror, Sci-Fi, 1945)
57		Unearthed (Horror, Mystery, Sci-Fi, 2007)
57		The Invisible Ray (Horror, Sci-Fi, Thriller, 1936)
56		The Frozen Dead (Sci-Fi, Horror, 1966)
56		Island of Lost Souls (Horror, Sci-Fi, 1932)
55		The Deadly Spawn (Horror, Sci-Fi, 1983)
55		The Colossus of New York (Horror, Sci-Fi, 1958)
55		Island Claws (Horror, Sci-Fi, 1980)
55		The Faculty (Horror, Sci-Fi, 1998)
55		Captive Wild Woman (Horror, Sci-Fi, 1943)
55		Embryo (Horror, Sci-Fi, 1976)
55		The Unknown Terror (Horror, Sci-Fi, 1957)
55		The Mist (Horror, Sci-Fi, 2007)
55		Sssssss (Horror, Sci-Fi, 1973)
55		Fiend Without a Face (Horror, Sci-Fi, 1958)
55		Attack of the 50 Foot Woman (Horror, Sci-Fi, 1958)
55		War of the Satellites (Horror, Sci-Fi, 1958)
55		Enemy from Space (Sci-Fi, Horror, 1957)
55		Project: Metalbeast (Horror, Sci-Fi, 1995)
55		Not of This Earth (Horror, Sci-Fi, 1957)
54		Jaws 2 (Adventure, Horror, Thriller, 1978)
54		Day the World Ended (Horror, Sci-Fi, 1955)
54		The Wasp Woman (Horror, Sci-Fi, 1959)
54		The Man from Planet X (Horror, Romance, Sci-Fi, 1951)
53		Donovan's Brain (Sci-Fi, Horror, 1953)
53		Beast from Haunted Cave (Crime, Horror, Thriller, 1959)
53		Varan the Unbelievable (Horror, Sci-Fi, 1962)
52		Scanners (Action, Horror, Sci-Fi, 1981)
52		Another World (Action, Horror, Sci-Fi, 2014)
52		Nightmare City (Action, Horror, Sci-Fi, 1980)
52		Resident Evil: Apocalypse (Action, Horror, Sci-Fi, 2004)
52		Bug (Sci-Fi, Horror, Mystery, 1975)
52		I Am Legend (Drama, Horror, Sci-Fi, 2007)
52		The Evil of Frankenstein (Horror, 1964)
51		Dr. Jekyll and Mr. Hyde (Horror, Sci-Fi, 1931)
50		Demon Seed (Horror, Sci-Fi, 1977)
50		I Married a Monster from Outer Space (Horror, Sci-Fi, 1958)
50		Rejuvenatrix (Horror, Sci-Fi, 1988)
50		The Alien Factor (Horror, Sci-Fi, 1978)
50		Ticks (Horror, Sci-Fi, 1993)
50		The Creeping Flesh (Horror, Sci-Fi, 1973)
50		Frankenstein Created Woman (Horror, 1967)
50		Syngenor (Horror, Sci-Fi, 1990)
50		Invasion of the Bee Girls (Horror, Sci-Fi, 1973)
50		Attack of the Puppet People (Sci-Fi, Horror, 1958)
50		It's Alive III: Island of the Alive (Horror, 1987)
50		Monster on the Campus (Horror, Sci-Fi, 1958)
50		Junk (Horror, 2000)
50		The Creature Walks Among Us (Horror, 1956)
50		Swamp Thing (Horror, Sci-Fi, 1982)
49		X: The Man with the X-Ray Eyes (Horror, Sci-Fi, Thriller, 1963)
49		Underworld: Awakening (Action, Fantasy, Horror, 2012)
49		The Fly (Drama, Fantasy, Horror, 1958)
49		The Manster (Horror, Sci-Fi, 1959)
49		Bride of the Monster (Horror, Sci-Fi, 1955)
48		Die, Monster, Die! (Mystery, Horror, Sci-Fi, 1965)
48		The Day of the Triffids (Horror, Sci-Fi, 1962)
47		The Haunted Palace (Horror, 1963)
47		The Mask of Fu Manchu (Adventure, Horror, Sci-Fi, 1932)
47		The Cosmic Monster (Drama, Sci-Fi, Horror, 1958)
47		Species II (Action, Horror, Sci-Fi, 1998)
47		Island of the Burning Damned (Horror, Mystery, Sci-Fi, 1967)
47		House of Frankenstein (Fantasy, Horror, Sci-Fi, 1944)
47		Resident Evil: Extinction (Action, Horror, Sci-Fi, 2007)
47		Return of the Ape Man (Horror, Romance, Sci-Fi, 1944)
47		Isolation (Horror, Sci-Fi, Thriller, 2005)
47		The Fly (Drama, Horror, Sci-Fi, 1986)
47		Frankenstein Meets the Wolf Man (Fantasy, Horror, Sci-Fi, 1943)
47		Jason X (Action, Horror, Sci-Fi, 2001)
46		Invasion of the Body Snatchers (Horror, Sci-Fi, 1956)
46		Terror Is a Man (Horror, Romance, Sci-Fi, 1959)
45		Attack of the Beast Creatures (Horror, 1985)
45		Wolfen (Horror, Thriller, 1981)
45		Dr Jekyll & Sister Hyde (Horror, Sci-Fi, 1971)
45		The Swarm (Horror, 1978)
45		Rattlers (Horror, 1976)
45		Terror of Frankenstein (Horror, Sci-Fi, 1977)
45		The Dark (Horror, Sci-Fi, 1979)
45		The Brain Eaters (Sci-Fi, Horror, 1958)
45		The Mutations (Horror, Sci-Fi, 1974)
45		The Spider (Horror, Sci-Fi, 1958)
45		The Crawling Eye (Horror, Sci-Fi, 1958)
45		Day of the Dead (Horror, 1985)
45		Blood of the Vampire (Horror, Sci-Fi, 1958)
45		The Man Without a Body (Horror, Sci-Fi, 1957)
45		The Werewolf (Sci-Fi, Horror, 1956)
45		Growth (Horror, Sci-Fi, 2010)
45		X the Unknown (Horror, Sci-Fi, 1956)
45		The Man Who Turned to Stone (Horror, Sci-Fi, 1957)
45		She Devil (Horror, Sci-Fi, 1957)
45		The Cyclops (Horror, Sci-Fi, 1957)
45		The Monster Maker (Horror, Sci-Fi, 1944)
45		I Was a Teenage Frankenstein (Horror, Sci-Fi, 1957)
45		The Black Scorpion (Horror, Sci-Fi, 1957)
45		Jeepers Creepers (Horror, Mystery, 2001)
45		The Terror Within II (Horror, Sci-Fi, 1991)
45		The Black Sleep (Horror, Sci-Fi, 1956)
44		Plan 9 from Outer Space (Horror, Sci-Fi, 1959)
44		The Alligator People (Horror, Sci-Fi, 1959)
44		Target Earth (Horror, Sci-Fi, 1954)
44		The Descent: Part 2 (Adventure, Horror, Thriller, 2009)
44		Them! (Horror, Sci-Fi, 1954)
44		Village of the Damned (Horror, Sci-Fi, 1960)
44		The Quatermass Xperiment (Horror, Sci-Fi, 1955)
44		Invisible Invaders (Sci-Fi, Horror, 1959)
43		The Brain That Wouldn't Die (Horror, Sci-Fi, 1962)
43		It Came from Outer Space (Horror, Sci-Fi, 1953)
43		Phantom from Space (Horror, Sci-Fi, 1953)
43		The Maze (Horror, Sci-Fi, 1953)
43		The Neanderthal Man (Horror, Sci-Fi, 1953)
43		The Giant Behemoth (Drama, Fantasy, Horror, 1959)
42		Alien: Resurrection (Action, Horror, Sci-Fi, 1997)
42		Beyond Atlantis (Fantasy, Horror, Sci-Fi, 1973)
42		Phase IV (Horror, Sci-Fi, Thriller, 1974)
42		The Kindred (Horror, Sci-Fi, Thriller, 1987)
42		Victor Frankenstein (Drama, Horror, Sci-Fi, 2015)
42		Frankenstein Must Be Destroyed (Horror, Drama, Sci-Fi, 1969)
42		Unearthly Stranger (Horror, Sci-Fi, 1963)
42		Alien (Horror, Sci-Fi, 1979)
42		Godzilla vs. Destoroyah (Action, Horror, Sci-Fi, 1995)
42		Son of Frankenstein (Sci-Fi, Horror, Drama, 1939)
42		The Signal (Horror, Sci-Fi, Thriller, 2007)
42		Species (Action, Horror, Sci-Fi, 1995)
42		The Deadly Mantis (Horror, Sci-Fi, Thriller, 1957)
42		Flight of the Living Dead (Action, Horror, Sci-Fi, 2007)
42		The Crazies (Action, Horror, Sci-Fi, 1973)
42		The Earth Dies Screaming (Horror, Sci-Fi, 1964)
41		Nightbeasts (Horror, Sci-Fi, 2010)
41		Creature with the Atom Brain (Crime, Horror, Sci-Fi, 1955)
41		Sting of Death (Horror, Sci-Fi, 1965)
41		Blood Beast from Outer Space (Horror, Sci-Fi, 1965)
41		Queen of Blood (Horror, Sci-Fi, 1966)
41		4D Man (Sci-Fi, Horror, Romance, 1959)
40		Goke, Body Snatcher from Hell (Horror, Sci-Fi, 1968)
40		The Zombie Diaries (Horror, Sci-Fi, 2006)
40		The Medusa Touch (Horror, Sci-Fi, 1978)
40		Willard (Horror, Sci-Fi, 1971)
40		The Pack (Horror, Thriller, 1977)
40		Driller (Horror, Sci-Fi, 2006)
40		13 Eerie (Horror, Sci-Fi, 2013)
40		The Bone Snatcher (Horror, Sci-Fi, 2003)
40		Subterano (Horror, Sci-Fi, 2003)
40		It! (Horror, Sci-Fi, 1967)
40		The Sunderland Experiment (Horror, Sci-Fi, 2014)
40		Scintilla (Horror, Sci-Fi, 2014)
40		Brides of Blood (Horror, Sci-Fi, 1968)
40		Invasion of the Body Snatchers (Horror, Sci-Fi, 1978)
40		Blood of the Beast (Horror, Sci-Fi, 2003)
40		The Toy Box (Horror, Sci-Fi, 1971)
40		Alien Prey (Horror, Sci-Fi, 1977)
40		Silent Night, Zombie Night (Horror, Sci-Fi, 2009)
40		Survival of the Dead (Horror, 2009)
40		Shivers (Horror, Sci-Fi, 1975)
40		Dead Season (Horror, Sci-Fi, 2012)
40		Extraterrestrial (Horror, Sci-Fi, 2014)
40		The Visitor (Horror, Sci-Fi, 1979)
40		Storage 24 (Horror, Sci-Fi, 2012)
40		Rabid (Horror, Sci-Fi, 1977)
40		Kingdom of the Spiders (Horror, Sci-Fi, 1977)
40		The Prometheus Project (Horror, Sci-Fi, 2010)
40		Frankenstein's Army (Horror, Sci-Fi, 2013)
40		The Man with Two Heads (Horror, Sci-Fi, 1972)
40		The Asphyx (Horror, Sci-Fi, 1972)
40		Garden of the Dead (Sci-Fi, Horror, 1972)
40		The Frankenstein Theory (Horror, Sci-Fi, 2013)
40		Hungerford (Horror, Sci-Fi, 2014)
40		The Nest (Horror, Sci-Fi, 1988)
40		Not Like Us (Horror, Sci-Fi, 1995)
40		Night of the Scarecrow (Horror, Sci-Fi, 1995)
40		Cameron's Closet (Horror, Sci-Fi, 1988)
40		Deep Space (Horror, Sci-Fi, 1988)
40		Pulse (Horror, Sci-Fi, 1988)
40		Invaders from Mars (Horror, Sci-Fi, 1986)
40		From Beyond (Horror, Sci-Fi, 1986)
40		The Curse (Sci-Fi, Horror, 1987)
40		Harbinger Down (Horror, Sci-Fi, 2015)
40		Lone Wolf (Horror, Sci-Fi, 1988)
40		Transformations (Horror, Sci-Fi, 1988)
40		Moontrap (Horror, Sci-Fi, 1989)
40		Seedpeople (Horror, Sci-Fi, 1992)
40		Shadowzone (Horror, Sci-Fi, 1990)
40		The Arrival (Horror, Sci-Fi, 1991)
40		Return of the Living Dead III (Horror, Sci-Fi, 1993)
40		Future Shock (Sci-Fi, Horror, 1994)
40		The Brain (Horror, Sci-Fi, 1988)
40		The Terror Within (Horror, Sci-Fi, 1989)
40		The Fly II (Horror, Sci-Fi, 1989)
40		The Diabolical (Horror, Sci-Fi, 2015)
40		Debug (Horror, Sci-Fi, 2014)
40		Hellraiser: Bloodline (Horror, Sci-Fi, 1996)
40		The Boogey Man (Horror, Sci-Fi, 1980)
40		Scared to Death (Horror, Sci-Fi, 1980)
40		Metamorphosis: The Alien Factor (Horror, Sci-Fi, 1990)
40		The Howling (Horror, 1981)
40		Without Warning (Sci-Fi, Horror, 1980)
40		Alligator (Horror, Sci-Fi, 1980)
40		The Brood (Horror, Sci-Fi, 1979)
40		Aberration (Horror, Sci-Fi, 1997)
40		Humanoids from the Deep (Horror, Sci-Fi, 1980)
40		The Children (Horror, Sci-Fi, 1980)
40		Ravager (Horror, Sci-Fi, 1997)
40		Forbidden World (Horror, Sci-Fi, 1982)
40		Spasms (Horror, Sci-Fi, 1983)
40		C.H.U.D. (Horror, Sci-Fi, 1984)
40		Death Warmed Over (Horror, Sci-Fi, 1984)
40		Creature (Horror, Sci-Fi, 1985)
40		Nightmares (Horror, Sci-Fi, 1983)
40		Mimic (Horror, Sci-Fi, 1997)
40		The Slayer (Horror, 1982)
40		Deadly Eyes (Horror, Sci-Fi, 1982)
40		Xtro (Horror, Sci-Fi, 1982)
40		Pitch Black (Horror, Sci-Fi, 2000)
40		The Boogens (Horror, 1981)
40		The Devil-Doll (Sci-Fi, Horror, 1936)
40		The Corpse Vanishes (Horror, Sci-Fi, 1942)
40		The Jungle Captive (Horror, Sci-Fi, 1945)
40		The Invisible Man's Revenge (Horror, Sci-Fi, 1944)
40		The Man Who Lived Again (Horror, Sci-Fi, 1936)
40		Dr. Jekyll and Mr. Hyde (Horror, Sci-Fi, 1941)
40		The Revenge of Frankenstein (Horror, 1958)

Notes: Movies similar to Attack of the Crab Monsters, Movies like Attack of the Crab Monsters, Horror, Sci-Fi, Roger Corman, Richard Garland, Pamela Duncan, Russell Johnson, Leslie Bradley, Films, Video, Movie Similarities