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The Best Sci Fi Television Series of All Time

403k votes 24k voters 509k views 280 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
  • 339 ReRanks
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  1. 1
    + 6,409
    - 3,012

    most listed
    Patrick Stewart, Brent Spiner, Jonathan Frakes

    ;
  2. 2
    + 8,515
    - 3,642


    Nathan Fillion, Gina Torres, Alan Tudyk

    ;
  3. 3
    + 5,492
    - 2,347


    William Shatner, Leonard Nimoy, DeForest Kelley

    ;
  4. 4
    + 7,618
    - 3,064


    Edward James Olmos, Mary McDonnell, Jamie Bamber

    ;
  5. 5
    + 6,621
    - 3,728

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

    ;
  6. 6
    + 5,691
    - 2,552


    David Duchovny, Gillian Anderson, Mitch Pileggi

    ;
  7. 7
    + 5,833
    - 2,314


    Richard Dean Anderson, Michael Shanks, Amanda Tapping

    ;
  8. 8
    + 3,935
    - 2,132


    Rod Serling, Robert McCord, Jay Overholts

    ;
  9. 9
    + 3,807
    - 2,285


    Avery Brooks, Rene Auberjonois, Cirroc Lofton

    ;
  10. 10
    + 4,599
    - 2,625


    Anna Torv, Joshua Jackson, Jasika Nicole

    ;
  11. 11
    + 5,024
    - 4,000

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

    ;
  12. 12
    + 3,930
    - 2,469


    Ben Browder, Claudia Black, Anthony Simcoe

    ;
  13. 13
    + 3,638
    - 2,118


    Kate Mulgrew, Robert Beltran, Roxann Dawson

    ;
  14. 14
    + 3,135
    - 2,042


    Scott Bakula, Dean Stockwell, Deborah Pratt

    ;
  15. 15
    + 3,328
    - 1,836


    Joe Flanigan, Rachel Luttrell, David Hewlett

    ;
  16. 16
    + 3,243
    - 1,872


    Scott Bakula, John Billingsley, Jolene Blalock

    ;
  17. 17
    + 3,652
    - 2,317


    Billy West, John DiMaggio, Katey Sagal

    ;
  18. 18
    + 2,803
    - 2,238


    John Barrowman, Eve Myles, Kai Owen

    ;
  19. 19
    + 2,961
    - 2,093


    Colin Ferguson, Salli Richardson-Whitfield, Erica Cerra

    ;
  20. 20
    + 3,279
    - 3,144

    often listed & ranked high on reranks
    Naveen Andrews, Matthew Fox, Jorge Garcia

    ;
  21. 21
    + 2,897
    - 2,522


    Hayden Panettiere, Jack Coleman, Milo Ventimiglia

    ;
  22. 22
    + 1,584
    - 669

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

    ;
  23. 23
    + 2,065
    - 1,692

    added by Richard777
    Kevin Conway, Joe Pascual

    ;
  24. 24
    + 2,531
    - 1,855


    Eddie McClintock, Joanne Kelly, Saul Rubinek

    ;
  25. 25
    + 2,470
    - 1,990


    Elizabeth Mitchell, Morris Chestnut, Joel Gretsch

    ;
  26. 26
    + 2,079
    - 1,855


    Chris Barrie, Craig Charles, Danny John-Jules

    ;
  27. 27
    + 2,059
    - 1,665


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

    ;
  28. 28
    + 2,323
    - 1,990


    Lena Headey, Thomas Dekker, Summer Glau

    ;
  29. 29
    + 624
    - 259

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

    ;
  30. 30
    + 2,044
    - 1,651


    Robert Carlyle, Louis Ferreira, Brian J. Smith

    ;
  31. 31
    + 1,155
    - 323

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

    ;
  32. 32
    + 1,411
    - 1,133


    Stephen Moore, Simon Jones, David Dixon

    ;
  33. 33
    + 1,592
    - 1,463


    Lee Majors, Richard Anderson, Martin E. Brooks

    ;
  34. 34
    + 1,542
    - 1,368

    added by toddrh
    Rachel Nichols, Stephen Lobo, Victor Webster

    ;
  35. 35
    + 1,389
    - 1,115

    added by huggums537
    Gil Gerard, Erin Gray, Felix Silla

    ;
  36. 36
    + 1,800
    - 1,484

    added by dustman025
    Noah Wyle, Drew Roy, Maxim Knight

    ;
  37. 37
    + 1,701
    - 1,852

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

    ;
  38. 38
    + 1,772
    - 1,587


    Lucy Lawless, Renée O'Connor, Ted Raimi

    ;
  39. 39
    + 1,000
    - 337

    ranked low on reranks
    Barry Jones

    ;
  40. 40
    + 1,638
    - 1,809


    Martin Landau, Barbara Bain, Nick Tate

    ;
  41. 41
    + 1,657
    - 1,658


    Jessica Alba, Michael Weatherly, Richard Gunn

    ;
  42. 42
    + 756
    - 479

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

    ;
  43. 43
    + 1,403
    - 1,327


    Guy Williams, June Lockhart, Mark Goddard

    ;
  44. 44
    + 1,558
    - 1,654


    Kevin Sorbo, Lisa Ryder, Laura Bertram

    ;
  45. 45
    + 1,606
    - 1,515


    John Lithgow, Jane Curtin, Kristen Johnston

    ;
  46. 46
    + 1,198
    - 1,247


    Bill Bixby, Lou Ferrigno, Jack Colvin

    ;
  47. 47
    + 1,248
    - 1,178


    William Hurt, Alec Newman, Giancarlo Giannini

    ;
  48. 48
    + 1,262
    - 1,022

    added by wiabux
    Adrian Paul, Stan Kirsch, Jim Byrnes

    ;
  49. 49
    + 1,042
    - 917


    Roddy McDowall, Ron Harper, James Naughton

    ;
  50. 50
    + 1,352
    - 1,503


    Joel Hodgson, Michael J. Nelson, Trace Beaulieu

    ;
281 +

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