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The Best Sci Fi Television Series of All Time

392k votes 24k voters 498k views 279 items tags f p @

List Criteria: Sci-fi TV shows and series with science fiction elements

Here is a list of the best sci-fi shows and best sci-fi series of all time, as ranked by hundreds of Ranker voters. This list includes long-running sci-fi TV shows like Doctor Who as well as some of the best canceled shows of the genre. Science fiction TV shows have been around for decades, and some of the longest running shows have fallen into this category. Popular shows such as Star Trek have enjoyed several incarnations, and fan-favorite shows like Firefly and The X-Files have made the crossover from TV to the big screen.

Thanks to networks like SyFy, FX, and The CW, new sci-fi TV shows premiere every year. Sci-fi series like The Expanse, Orphan Black, and The 100 continue to raise viewership ratings and grow fan bases. Netflix has also contributed to the science fiction genre with their original series Stranger Things, which was met with rave reviews. 

Vote for your favorite science fiction shows to move them to the top of the list, or press re-rank to create your own list of your favorite science fiction series. Be sure to stop by to vote on the best British sitcoms and best current TV shows airing right now.

List Photo: user uploaded image
Collection Photo:  via hbo
  • 335 ReRanks
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  1. 1
    + 6,310
    - 2,928

    most listed
    Patrick Stewart, Brent Spiner, Jonathan Frakes

    ;
  2. 2
    + 8,354
    - 3,581


    Nathan Fillion, Gina Torres, Alan Tudyk

    ;
  3. 3
    + 5,397
    - 2,285


    William Shatner, Leonard Nimoy, DeForest Kelley

    ;
  4. 4
    + 7,460
    - 3,009


    Edward James Olmos, Mary McDonnell, Jamie Bamber

    ;
  5. 5
    + 6,526
    - 3,653

    the people's #1 & often listed
    Peter Capaldi, Jenna Coleman, Matt Smith

    ;
  6. 6
    + 5,606
    - 2,487


    David Duchovny, Gillian Anderson, Mitch Pileggi

    ;
  7. 7
    + 5,706
    - 2,274


    Richard Dean Anderson, Michael Shanks, Amanda Tapping

    ;
  8. 8
    + 3,860
    - 2,081


    Rod Serling, Robert McCord, Jay Overholts

    ;
  9. 9
    + 3,723
    - 2,230


    Avery Brooks, Rene Auberjonois, Cirroc Lofton

    ;
  10. 10
    + 4,936
    - 3,951

    often listed & ranked high on reranks
    Jerry Doyle, Mira Furlan, Richard Biggs

    ;
  11. 11
    + 4,497
    - 2,579


    Anna Torv, Joshua Jackson, Jasika Nicole

    ;
  12. 12
    + 3,847
    - 2,427


    Ben Browder, Claudia Black, Anthony Simcoe

    ;
  13. 13
    + 3,564
    - 2,070


    Kate Mulgrew, Robert Beltran, Roxann Dawson

    ;
  14. 14
    + 3,077
    - 1,998


    Scott Bakula, Dean Stockwell, Deborah Pratt

    ;
  15. 15
    + 3,247
    - 1,798


    Joe Flanigan, Rachel Luttrell, David Hewlett

    ;
  16. 16
    + 3,172
    - 1,839


    Scott Bakula, John Billingsley, Jolene Blalock

    ;
  17. 17
    + 3,589
    - 2,263


    Billy West, John DiMaggio, Katey Sagal

    ;
  18. 18
    + 2,751
    - 2,191


    John Barrowman, Eve Myles, Kai Owen

    ;
  19. 19
    + 2,899
    - 2,054


    Colin Ferguson, Salli Richardson-Whitfield, Erica Cerra

    ;
  20. 20
    + 2,841
    - 2,468


    Hayden Panettiere, Jack Coleman, Milo Ventimiglia

    ;
  21. 21
    + 3,217
    - 3,093


    Naveen Andrews, Matthew Fox, Jorge Garcia

    ;
  22. 22
    + 1,492
    - 633

    ranked low on reranks & added by JimmyPaton
    Edward James Olmos, Mary McDonnell, Jamie Bamber

    ;
  23. 23
    + 2,029
    - 1,655

    added by Richard777
    Kevin Conway, Joe Pascual

    ;
  24. 24
    + 2,483
    - 1,813


    Eddie McClintock, Joanne Kelly, Saul Rubinek

    ;
  25. 25
    + 2,437
    - 1,951


    Elizabeth Mitchell, Morris Chestnut, Joel Gretsch

    ;
  26. 26
    + 2,041
    - 1,814


    Chris Barrie, Craig Charles, Danny John-Jules

    ;
  27. 27
    + 2,017
    - 1,637


    Jerry O'Connell, Sabrina Lloyd, John Rhys-Davies

    ;
  28. 28
    + 2,277
    - 1,961


    Lena Headey, Thomas Dekker, Summer Glau

    ;
  29. 29
    + 567
    - 232

    ranked low on reranks & added by nymless
    Clark Gregg, Ming-Na Wen, Brett Dalton

    ;
  30. 30
    + 2,000
    - 1,611


    Robert Carlyle, Louis Ferreira, Brian J. Smith

    ;
  31. 31
    + 1,068
    - 297

    ranked low on reranks
    Shohreh Aghdashloo, Cas Anvar, Wes Chatham

    ;
  32. 32
    + 1,372
    - 1,104


    Stephen Moore, Simon Jones, David Dixon

    ;
  33. 33
    + 1,573
    - 1,428


    Lee Majors, Richard Anderson, Martin E. Brooks

    ;
  34. 34
    + 1,511
    - 1,334

    added by toddrh
    Rachel Nichols, Stephen Lobo, Victor Webster

    ;
  35. 35
    + 1,360
    - 1,093

    added by huggums537
    Gil Gerard, Erin Gray, Felix Silla

    ;
  36. 36
    + 1,668
    - 1,822

    often listed & ranked high on reranks
    Eliza Dushku, Harry Lennix, Fran Kranz

    ;
  37. 37
    + 962
    - 306

    ranked low on reranks
    Barry Jones

    ;
  38. 38
    + 1,744
    - 1,454

    added by dustman025
    Noah Wyle, Drew Roy, Maxim Knight

    ;
  39. 39
    + 1,735
    - 1,559


    Lucy Lawless, Renée O'Connor, Ted Raimi

    ;
  40. 40
    + 1,617
    - 1,779


    Martin Landau, Barbara Bain, Nick Tate

    ;
  41. 41
    + 1,628
    - 1,634


    Jessica Alba, Michael Weatherly, Richard Gunn

    ;
  42. 42
    + 1,383
    - 1,302


    Guy Williams, June Lockhart, Mark Goddard

    ;
  43. 43
    + 710
    - 454

    ranked low on reranks
    Grant Gustin, Candice Patton, Danielle Panabaker

    ;
  44. 44
    + 1,532
    - 1,633


    Kevin Sorbo, Lisa Ryder, Laura Bertram

    ;
  45. 45
    + 1,177
    - 1,225


    Bill Bixby, Lou Ferrigno, Jack Colvin

    ;
  46. 46
    + 1,026
    - 892


    Roddy McDowall, Ron Harper, James Naughton

    ;
  47. 47
    + 1,215
    - 1,153


    William Hurt, Alec Newman, Giancarlo Giannini

    ;
  48. 48
    + 1,225
    - 1,002

    added by wiabux
    Adrian Paul, Stan Kirsch, Jim Byrnes

    ;
  49. 49
    + 1,580
    - 1,485


    John Lithgow, Jane Curtin, Kristen Johnston

    ;
  50. 50
    + 1,336
    - 1,476


    Joel Hodgson, Michael J. Nelson, Trace Beaulieu

    ;
280 +

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