The Greatest Sci-Fi Movies of All Time

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List Criteria: Which science fiction films are the best? Vote up your favorites and add any that aren't already on the list.

What are the greatest sci-fi movies of all time? Science fiction films are among the most popular movies in cinematic history, with films like Star Wars and Aliens keeping audiences on the edge of their collective seats for decades. This list includes these classics, and many more, but it is by no means complete. Feel free to add your favorite sci-fi movies if they aren't listed, and vote for your favorites.

Want to see more of the best Sci-Fi? Here are the Best Sci-Fi TV Shows of All Time

Great sci-fi films include stories of extraterrestrial life, time travel, space travel, robots and more. Some of these amazing science fiction movies are more fantasy-oriented, while others are a bit closer to reality. Either way, scifi films keep audiences rapt with tales of science and technology, combined, at times with the supernatural.

Some sci-fi films are based on classic novels or short stories by such heavyweight authors as H.G. Wells (War of the WorldsThe Invisible Man) or Philip K. Dick (Blade RunnerMinority Report).

What are the greatest sci fi movies of all time? This list of the best sci-fi films is also Crowdranked, meaning you can rerank your own greatest sci-fi movies. Your reranks can change the overall order of the films on the list!

Collection Photo: user uploaded image
  • 145 ReRanks
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    • Men
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  1. 1
    + 2,773
    - 851

    the people's #1 & most listed
    Harrison Ford, Carrie Fisher, Mark Hamill

    ;
  2. 2
    + 2,879
    - 686

    ranked low on reranks
    Harrison Ford, Carrie Fisher, Mark Hamill

    ;
  3. 3
    + 2,301
    - 778


    Sigourney Weaver, John Hurt, Ian Holm

    ;
  4. 4
    + 2,011
    - 779


    Arnold Schwarzenegger, Edward Furlong, Linda Hamilton

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  5. 5
    + 2,431
    - 882


    Keanu Reeves, Hugo Weaving, Carrie-Anne Moss

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  6. 6
    + 2,127
    - 722


    Harrison Ford, Daryl Hannah, Sean Young

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  7. 7
    + 2,021
    - 678


    Arnold Schwarzenegger, Bill Paxton, Linda Hamilton

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  8. 8
    + 2,050
    - 748


    Michael J. Fox, Christopher Lloyd, Lea Thompson

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  9. 9
    + 2,038
    - 593


    Harrison Ford, Carrie Fisher, Mark Hamill

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  10. 10
    + 1,720
    - 803

    often listed & ranked high on reranks
    Arthur C. Clarke, Leonard Rossiter, Ed Bishop

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  11. 11
    + 1,948
    - 610


    Sigourney Weaver, Bill Paxton, Michael Biehn

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  12. 12
    + 1,903
    - 659


    Samuel L. Jackson, Jeff Goldblum, Richard Attenborough

    ;
  13. 13
    + 1,300
    - 788

    often listed
    Drew Barrymore, Erika Eleniak, Debra Winger

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  14. 14
    + 1,126
    - 656


    Richard Dreyfuss, Teri Garr, Carl Weathers

    ;
  15. 15
    + 1,355
    - 671


    Kirstie Alley, William Shatner, Leonard Nimoy

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  16. 16
    + 1,335
    - 605


    Arnold Schwarzenegger, Sharon Stone, Michael Ironside

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  17. 17
    + 1,626
    - 701


    Milla Jovovich, Bruce Willis, Gary Oldman

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  18. 18
    + 1,275
    - 667


    Charlton Heston, Linda Harrison, James Whitmore

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  19. 19
    + 1,406
    - 622


    Bill Murray, Sigourney Weaver, Dan Aykroyd

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  20. 20
    + 1,467
    - 536


    Arnold Schwarzenegger, Jesse Ventura, Carl Weathers

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  21. 21
    + 1,394
    - 768


    Will Smith, Jeff Goldblum, Vivica A. Fox

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  22. 22
    + 1,344
    - 677


    Zoe Saldana, Jennifer Morrison, Winona Ryder

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  23. 23
    + 1,510
    - 731


    Leonardo DiCaprio, Tom Hardy, Marion Cotillard

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  24. 24
    + 1,052
    - 546


    Brad Pitt, Bruce Willis, Christopher Plummer

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  25. 25
    + 1,145
    - 515


    Kurt Russell, James Spader, Djimon Hounsou

    ;
  26. 26
    + 1,040
    - 563


    Clint Eastwood, Michael J. Fox, Elisabeth Shue

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  27. 27
    + 951
    - 257

    ranked low on reranks & added by AndrewGreen
    Zoe Saldana, Bradley Cooper, Karen Gillan

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  28. 28
    + 1,167
    - 599


    Sigourney Weaver, Laraine Newman, Kathy Najimy

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  29. 29
    + 920
    - 616

    often listed
    Cameron Diaz, Tom Cruise, Colin Farrell

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  30. 30
    + 1,285
    - 891

    often listed & ranked high on reranks
    Zoe Saldana, Sigourney Weaver, Michelle Rodriguez

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  31. 31
    + 1,048
    - 480


    Kurt Russell, Keith David, John Carpenter

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  32. 32
    + 874
    - 296

    ranked low on reranks & added by but chickens double d
    Will Smith, Sylvester Stallone, Steven Spielberg

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  33. 33
    + 1,051
    - 512

    ranked low on reranks
    Summer Glau, Morena Baccarin, Nathan Fillion

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  34. 34
    + 775
    - 463


    Yvette Mimieux, Rod Taylor, Alan Young

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  35. 35
    + 986
    - 577


    Neil Patrick Harris, Denise Richards, Amy Smart

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  36. 36
    + 853
    - 495


    Mel Gibson, Bruce Spence, Vernon Wells

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  37. 37
    + 811
    - 532


    Patricia Neal, Michael Rennie, Frances Bavier

    ;
  38. 38
    + 962
    - 643


    Sharlto Copley, Jed Brophy, Vanessa Haywood

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  39. 39
    + 897
    - 497


    Alex Van Halen, Peter Weller, Leeza Gibbons

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  40. 40
    + 863
    - 544


    Sigourney Weaver, Alan Rickman, Tim Allen

    ;
  41. 41
    + 726
    - 276

    ranked low on reranks
    Harrison Ford, Sean Connery, River Phoenix

    ;
  42. 42
    + 733
    - 441


    Ed Harris, Mary Elizabeth Mastrantonio, Chris Elliott

    ;
  43. 43
    + 577
    - 440

    added by DukeArcher
    Malcolm McDowell, Warren Clarke, Steven Berkoff

    ;
  44. 44
    + 669
    - 422


    Tom Hanks, Bryce Dallas Howard, Ed Harris

    ;
  45. 45
    + 741
    - 586


    Matthew McConaughey, Jodie Foster, Jay Leno

    ;
  46. 46
    + 618
    - 455


    William Shatner, Leonard Nimoy, George Takei

    ;
  47. 47
    + 758
    - 511


    Will Smith, Shia LaBeouf, Bridget Moynahan

    ;
  48. 48
    + 708
    - 471


    Joan Rivers, John Hurt, Mel Brooks

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  49. 49
    + 594
    - 279

    ranked low on reranks
    Mel Gibson, Hugh Keays-Byrne, Steve Bisley

    ;
  50. 50
    + 639
    - 431


    Patrick Stewart, James Cromwell, Alfre Woodard

    ;
569 +

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