97		Mysterious Island (Adventure, Family, Sci-Fi, 1961)
95		The Secret of Treasure Island (Action, Adventure, Crime, Sci-Fi, 1938)
88		Journey to the Center of the Earth (Adventure, Family, Fantasy, Sci-Fi, 1959)
85		The Island at the Top of the World (Adventure, Family, Fantasy, Sci-Fi, 1974)
85		Atlantis: The Lost Empire (Animation, Action, Adventure, Sci-Fi, 2001)
80		Fantastic Voyage (Adventure, Family, Sci-Fi, 1966)
65		Port Sinister (Adventure, Crime, Sci-Fi, 1953)
65		The Spy Who Loved Me (Action, Adventure, Sci-Fi, 1977)
65		Titan A.E. (Animation, Action, Adventure, Sci-Fi, 2000)
62		The Lost World (Adventure, Fantasy, Sci-Fi, 1960)
61		King Kong vs. Godzilla (Action, Adventure, Fantasy, Sci-Fi, 1962)
60		Timeline (Action, Adventure, Sci-Fi, 2003)
60		20,000 Leagues Under the Sea (Action, Adventure, Sci-Fi, 1916)
60		Captain Nemo and the Underwater City (Adventure, Family, Fantasy, Sci-Fi, 1969)
60		Pacific Rim (Action, Adventure, Sci-Fi, 2013)
60		Journey to the Center of the Earth (Action, Adventure, Family, Sci-Fi, 2008)
60		The Host (Comedy, Drama, Horror, Sci-Fi, 2006)
56		X: First Class (Action, Adventure, Sci-Fi, 2011)
55		G.I. Joe: The Rise of Cobra (Action, Adventure, Sci-Fi, 2009)
55		The Incredible Hulk (Action, Adventure, Sci-Fi, 2008)
55		TMNT (Animation, Action, Adventure, Sci-Fi, 2007)
55		Beowulf (Action, Adventure, Fantasy, Sci-Fi, 1999)
55		Star Trek: Insurrection (Action, Adventure, Sci-Fi, 1998)
55		Warlords of the Deep (Fantasy, Adventure, Sci-Fi, 1978)
55		Congo (Action, Adventure, Mystery, Sci-Fi, 1995)
55		Undersea Kingdom (Sci-Fi, Adventure, 1936)
53		Abbott and Costello Meet Frankenstein (Comedy, Fantasy, Horror, Sci-Fi, 1948)
52		WALL·E (Animation, Adventure, Family, Sci-Fi, 2008)
50		The Lost World: Jurassic Park (Action, Adventure, Sci-Fi, 1997)
50		Suchîmubôi (Animation, Action, Adventure, Sci-Fi, 2004)
50		X2 (Action, Adventure, Fantasy, Sci-Fi, 2003)
50		Dylan Dog: Dead of Night (Action, Comedy, Crime, Sci-Fi, 2010)
50		Sky Captain and the World of Tomorrow (Action, Adventure, Mystery, Sci-Fi, 2004)
50		John Carter (Action, Adventure, Sci-Fi, 2012)
50		Panther Girl of the Kongo (Action, Sci-Fi, 1955)
50		Monsters vs. Aliens (Animation, Action, Adventure, Sci-Fi, 2009)
49		The Land Unknown (Adventure, Fantasy, Sci-Fi, 1957)
45		X-Men (Action, Adventure, Sci-Fi, 2000)
45		Dykkerne (Adventure, Family, Sci-Fi, 2000)
45		The Maze Runner (Action, Mystery, Sci-Fi, 2014)
45		The Raiders of Atlantis (Action, Sci-Fi, 1983)
45		The Mysterious Island (Adventure, Romance, Sci-Fi, 1929)
45		Guyver (Sci-Fi, Action, Comedy, 1991)
45		Godzilla (Action, Adventure, Sci-Fi, 2014)
45		Star Trek: Nemesis (Action, Adventure, Sci-Fi, 2002)
45		Frankenweenie (Animation, Comedy, Family, Sci-Fi, 2012)
45		Battleship (Action, Adventure, Sci-Fi, 2012)
42		Brick Bradford (Action, Adventure, Sci-Fi, 1947)
41		Serenity (Action, Adventure, Sci-Fi, 2005)
41		Bride of Frankenstein (Comedy, Drama, Horror, Sci-Fi, 1935)
41		Vampire Hunter D: Bloodlust (Animation, Action, Adventure, Sci-Fi, 2000)
41		Star Trek (Action, Adventure, Sci-Fi, 2009)
40		Waterworld (Action, Adventure, Sci-Fi, 1995)
40		Archon Defender (Animation, Action, Fantasy, Sci-Fi, 2009)
40		Transformers (Action, Adventure, Sci-Fi, 2007)
40		Gojira tai Mosura tai Mekagojira: Tôkyô S.O.S. (Action, Adventure, Fantasy, Sci-Fi, 2003)
40		At the Earth's Core (Sci-Fi, Adventure, Fantasy, 1976)
40		Final Fantasy: The Spirits Within (Animation, Action, Adventure, Sci-Fi, 2001)
40		Hulk (Action, Sci-Fi, 2003)
40		Pokémon 3: The Movie (Animation, Action, Adventure, Sci-Fi, 2000)
40		The Powerpuff Girls Movie (Animation, Action, Adventure, Sci-Fi, 2002)
40		Robosapien: Rebooted (Adventure, Drama, Family, Sci-Fi, 2013)
40		While Nero Fiddled (Adventure, Comedy, Fantasy, Sci-Fi, 1944)
40		Shadow Dancer: The Secret of Shinobi (Action, Adventure, Fantasy, Sci-Fi, 1990)
40		Pinocchio in Outer Space (Animation, Adventure, Family, Sci-Fi, 1965)
40		Forbidden Planet (Action, Adventure, Sci-Fi, 1956)
40		X-Men: Apocalypse (Action, Adventure, Sci-Fi, 2016)
36		Star Trek Into Darkness (Action, Adventure, Sci-Fi, 2013)
36		X-Men: Days of Future Past (Action, Adventure, Sci-Fi, 2014)
35		Tobor the Great (Sci-Fi, 1954)
35		The Secret Adventures of Tom Thumb (Animation, Adventure, Sci-Fi, 1993)
35		Outlander (Action, Adventure, Sci-Fi, 2008)
35		Silver Needle in the Sky (Adventure, Family, Sci-Fi, 1954)
35		Grabbers (Comedy, Horror, Sci-Fi, 2012)
35		BraveStarr: The Legend (Adventure, Animation, Sci-Fi, 1988)
35		Flubber (Comedy, Family, Sci-Fi, 1997)
34		The Invisible Boy (Adventure, Comedy, Family, Sci-Fi, 1957)
34		Fury of the Congo (Action, Adventure, Crime, Sci-Fi, 1951)
34		Superman and the Mole-Men (Action, Drama, Family, Sci-Fi, 1951)
33		The Angry Red Planet (Adventure, Sci-Fi, 1959)
32		Voyage to the Bottom of the Sea (Action, Adventure, Sci-Fi, 1961)
32		The Absent Minded Professor (Comedy, Family, Sci-Fi, 1961)
31		The Nutty Professor (Comedy, Romance, Sci-Fi, 1963)
31		Five Weeks in a Balloon (Adventure, Comedy, Drama, Sci-Fi, 1962)
31		The Adventures of Mark Twain (Animation, Adventure, Family, Sci-Fi, 1985)
30		Advantageous (Drama, Family, Sci-Fi, 2015)
30		Lost in Space (Action, Adventure, Family, Sci-Fi, 1998)
30		Superman Returns (Action, Adventure, Sci-Fi, 2006)
30		Invisible Agent (Adventure, Romance, Sci-Fi, 1942)
30		The Boy with the X-Ray Eyes (Adventure, Comedy, Family, Sci-Fi, 1999)
30		Muppets from Space (Adventure, Comedy, Family, Sci-Fi, 1999)
30		Anak ng bulkan (Family, Adventure, Fantasy, Sci-Fi, 1997)
30		Zoom (Action, Adventure, Family, Sci-Fi, 2006)
30		Storybook (Adventure, Family, Animation, Sci-Fi, 1996)
30		Kruistocht in spijkerbroek (Adventure, Family, Fantasy, Sci-Fi, 2006)
30		Pokémon the Movie: Genesect and the Legend Awakened (Animation, Adventure, Family, Sci-Fi, 2013)
30		Men in Black (Adventure, Comedy, Family, Sci-Fi, 1997)
30		Star Kid (Adventure, Sci-Fi, Family, 1997)
30		Slither (Comedy, Horror, Sci-Fi, 2006)
30		Tomorrowland (Action, Adventure, Family, Sci-Fi, 2015)
30		Science Fiction (Adventure, Family, Mystery, Sci-Fi, 2002)
30		Meet Dave (Adventure, Comedy, Family, Sci-Fi, 2008)
30		Pokémon: The Rise of Darkrai (Animation, Adventure, Family, Sci-Fi, 2007)
30		Treasure Planet (Animation, Adventure, Family, Sci-Fi, 2002)
30		Good Boy! (Comedy, Drama, Family, Sci-Fi, 2003)
30		An Enraged New World (Adventure, Fantasy, Action, Sci-Fi, 2002)
30		Ingénue (Drama, Family, Sci-Fi, 2013)
30		City of Ember (Adventure, Family, Fantasy, Sci-Fi, 2008)
30		I racconti dell'orso (Adventure, Comedy, Family, Sci-Fi, 2015)
30		Sky High (Adventure, Comedy, Family, Sci-Fi, 2005)
30		Seeking a Friend for the End of the World (Adventure, Comedy, Drama, Sci-Fi, 2012)
30		Gojira: Fainaru uôzu (Action, Adventure, Fantasy, Sci-Fi, 2004)
30		Kaena: The Prophecy (Animation, Adventure, Family, Sci-Fi, 2003)
30		Mighty Morphin Power Rangers: The Movie (Action, Adventure, Family, Sci-Fi, 1995)
30		The Night Shift (Adventure, Comedy, Fantasy, Sci-Fi, 2011)
30		Rainbow Brite and the Star Stealer (Animation, Adventure, Family, Sci-Fi, 1985)
30		Willy McBean and His Magic Machine (Animation, Adventure, Family, Sci-Fi, 1965)
30		Biggles: Adventures in Time (Adventure, Family, Sci-Fi, 1986)
30		Escape to Witch Mountain (Adventure, Family, Fantasy, Sci-Fi, 1975)
30		Flight of the Navigator (Adventure, Family, Sci-Fi, 1986)
30		The Great Mouse Detective (Animation, Adventure, Family, Sci-Fi, 1986)
30		SpaceCamp (Adventure, Family, Sci-Fi, 1986)
30		Baby: Secret of the Lost Legend (Family, Adventure, Sci-Fi, 1985)
30		Supergirl (Action, Adventure, Fantasy, Sci-Fi, 1984)
30		Attack of the Killer Tomatoes! (Adventure, Comedy, Horror, Sci-Fi, 1978)
30		Impolex (Adventure, Comedy, Drama, Sci-Fi, 2009)
30		Return from Witch Mountain (Family, Adventure, Sci-Fi, 1978)
30		Unidentified Flying Oddball (Comedy, Family, Adventure, Sci-Fi, 1979)
30		Race to Witch Mountain (Action, Adventure, Family, Sci-Fi, 2009)
30		Dr. Who and the Daleks (Adventure, Family, Sci-Fi, 1965)
30		Earth to Echo (Adventure, Family, Sci-Fi, 2014)
30		Star Trek IV: The Voyage Home (Adventure, Comedy, Sci-Fi, 1986)
30		Astro Boy (Animation, Action, Comedy, Sci-Fi, 2009)
30		The Neptune Factor (Sci-Fi, 1973)
30		Mom and Dad Save the World (Adventure, Comedy, Family, Sci-Fi, 1992)
30		Hello Down There (Comedy, Sci-Fi, 1969)
30		The Flesh Eaters (Comedy, Horror, Sci-Fi, 1964)
30		Planet 51 (Animation, Adventure, Comedy, Sci-Fi, 2009)
30		Star Trek VI: The Undiscovered Country (Action, Adventure, Sci-Fi, 1991)
30		Honey I Blew Up the Kid (Adventure, Comedy, Family, Sci-Fi, 1992)
30		Tremors (Comedy, Horror, Sci-Fi, 1990)
30		Short Circuit 2 (Comedy, Drama, Family, Sci-Fi, 1988)
30		Nosferatu vs. Father Pipecock & Sister Funk (Adventure, Comedy, Fantasy, Sci-Fi, 2014)
30		Felix the Cat: The Movie (Animation, Adventure, Family, Sci-Fi, 1988)
30		Honey, I Shrunk the Kids (Adventure, Comedy, Family, Sci-Fi, 1989)
30		Super Mario Bros. (Adventure, Comedy, Family, Sci-Fi, 1993)
26		Son of Flubber (Comedy, Sci-Fi, Family, 1963)
25		Doctor X (Comedy, Crime, Horror, Sci-Fi, 1932)
25		The Million Dollar Duck (Comedy, Family, Sci-Fi, 1971)
25		Underworld: Evolution (Action, Adventure, Fantasy, Sci-Fi, 2006)
25		Superman (Action, Adventure, Sci-Fi, 1973)
25		F. P. 1 Doesn't Answer (Fantasy, Sci-Fi, 1933)
25		Odysseus: Voyage to the Underworld (Action, Adventure, Fantasy, Sci-Fi, 2008)
25		Underdog (Action, Adventure, Comedy, Sci-Fi, 2007)
25		Monster in the Closet (Comedy, Horror, Sci-Fi, 1986)
25		Frankenhooker (Comedy, Horror, Sci-Fi, 1990)
25		Star Trek V: The Final Frontier (Action, Adventure, Sci-Fi, 1989)
25		First Men in the Moon (Adventure, Sci-Fi, 1964)
25		Frankenstein and Me (Comedy, Family, Fantasy, Sci-Fi, 1996)
25		The Nutty Professor (Comedy, Romance, Sci-Fi, 1996)
25		Airplane II: The Sequel (Comedy, Sci-Fi, 1982)
25		Underworld: Rise of the Lycans (Action, Adventure, Fantasy, Sci-Fi, 2009)
25		The Rocket Man (Family, Sci-Fi, Comedy, 1954)
25		Shock! Shock! Shock! (Adventure, Comedy, Fantasy, Sci-Fi, 1987)
25		Killer Ape (Adventure, Sci-Fi, 1953)
25		A Fish Tale (Animation, Adventure, Comedy, Sci-Fi, 2000)
24		World Without End (Adventure, Romance, Sci-Fi, 1956)
24		Jungle Jim in the Forbidden Land (Sci-Fi, Adventure, 1952)
24		Captain Video, Master of the Stratosphere (Sci-Fi, Adventure, 1951)
24		The Whip Hand (Action, Adventure, Crime, Sci-Fi, 1951)
24		Two Lost Worlds (Adventure, Romance, Sci-Fi, 1951)
24		Savage Fury (Adventure, Sci-Fi, 1956)
24		The Man in the White Suit (Comedy, Drama, Sci-Fi, 1951)
24		Jungle Manhunt (Adventure, Sci-Fi, 1951)
23		Batman and Robin (Action, Adventure, Crime, Sci-Fi, 1949)
23		Star Wars: Episode V - The Empire Strikes Back (Action, Adventure, Fantasy, Sci-Fi, 1980)
23		Bruce Gentry (Action, Adventure, Crime, Sci-Fi, 1949)
23		Star Wars: Episode IV - A New Hope (Action, Adventure, Fantasy, Sci-Fi, 1977)
23		Flying Disc Man from Mars (Action, Adventure, Crime, Sci-Fi, 1950)
23		Queen of Outer Space (Adventure, Fantasy, Sci-Fi, 1958)
23		From the Earth to the Moon (Adventure, Fantasy, Sci-Fi, 1958)
23		The Time Machine (Adventure, Romance, Sci-Fi, 1960)
23		The Invisible Monster (Action, Adventure, Crime, Sci-Fi, 1950)
23		It Happens Every Spring (Comedy, Sci-Fi, Sport, 1949)
22		PK (Comedy, Drama, Romance, Sci-Fi, 2014)
22		Star Wars: The Force Awakens (Action, Adventure, Fantasy, Sci-Fi, 2015)
22		It's Such a Beautiful Day (Animation, Comedy, Drama, Sci-Fi, 2012)
22		Captain America: Civil War (Action, Adventure, Sci-Fi, 2016)
22		Deadpool (Action, Adventure, Comedy, Sci-Fi, 2016)
22		Mad Max: Fury Road (Action, Adventure, Sci-Fi, 2015)
22		Guardians of the Galaxy (Action, Adventure, Sci-Fi, 2014)
22		The Truman Show (Comedy, Drama, Sci-Fi, 1998)
22		Valley of the Dragons (Adventure, Fantasy, Sci-Fi, 1961)
22		2001: A Space Odyssey (Adventure, Mystery, Sci-Fi, 1968)
22		Star Wars: Episode VI - Return of the Jedi (Action, Adventure, Fantasy, Sci-Fi, 1983)
22		Flight That Disappeared (Adventure, Fantasy, Sci-Fi, 1961)
22		Master of the World (Sci-Fi, Adventure, 1961)
22		Zpívající pudrenka (Comedy, Crime, Family, Sci-Fi, 1960)
22		Atlantis, the Lost Continent (Adventure, Sci-Fi, 1961)
22		Superman (Sci-Fi, 1948)
22		Back to the Future (Adventure, Comedy, Sci-Fi, 1985)

Notes: Movies similar to 20,000 Leagues Under the Sea, Movies like 20,000 Leagues Under the Sea, Adventure, Drama, Family, Sci-Fi, Richard Fleischer, Kirk Douglas, James Mason, Paul Lukas, Peter Lorre, SF, Science Fiction, SciFi, Sci Fi, Films, Video, Movie Similarities