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The Best Sci-Fi Television Series Of All Time

Updated October 12, 2020 1.2m votes 64.3k voters 822.4k views308 items

List RulesVote up the best sci-fi TV shows and series with strong 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.

Are you a sci-fi fan? Check out this list of current sci-fi shows to watch. 

 

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  • 1
    Firefly is listed (or ranked) 1 on the list The Best Sci-Fi Television Series Of All Time
    23,406
    9,683

    Firefly

    Nathan Fillion, Gina Torres

    Premiered2002

    NetworkFox Broadcasting Company

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  • 2
    Star Trek: The Next Generation is listed (or ranked) 2 on the list The Best Sci-Fi Television Series Of All Time
    16,628
    8,655

    Star Trek: The Next Generation

    Patrick Stewart, Brent Spiner

    Premiered1987

    NetworkCBS

    amazon buy button

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  • 3
    Stargate SG-1 is listed (or ranked) 3 on the list The Best Sci-Fi Television Series Of All Time
    15,201
    7,390

    Stargate SG-1

    Richard Dean Anderson, Michael Shanks

    Premiered1997

    NetworkShowtime, Syfy

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  • 4
    Battlestar Galactica is listed (or ranked) 4 on the list The Best Sci-Fi Television Series Of All Time
    16,776
    9,562

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered2004

    NetworkSyfy

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  • 5
    Doctor Who is listed (or ranked) 5 on the list The Best Sci-Fi Television Series Of All Time
    15,484
    9,369

    Doctor Who

    Christopher Eccleston, David Tennant

    Premiered1963

    NetworkBritish Broadcasting Corporation, BBC America, BBC One, S4C, BBC HD

    amazon buy button

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  • 6
    Star Trek: Deep Space Nine is listed (or ranked) 6 on the list The Best Sci-Fi Television Series Of All Time
    11,647
    7,112

    Star Trek: Deep Space Nine

    Avery Brooks, Rene Auberjonois

    Premiered1993

    NetworkUPN

    amazon buy button
  • 7
    Star Trek: The Original Series is listed (or ranked) 7 on the list The Best Sci-Fi Television Series Of All Time
    12,711
    7,814

    Star Trek: The Original Series

    William Shatner, Leonard Nimoy

    Premiered1966

    NetworkNBC

    amazon buy button
  • 8
    Star Trek: Voyager is listed (or ranked) 8 on the list The Best Sci-Fi Television Series Of All Time
    10,771
    6,588

    Star Trek: Voyager

    Kate Mulgrew, Robert Beltran

    Premiered1995

    NetworkUPN

    amazon buy button
  • 9
    The X-Files is listed (or ranked) 9 on the list The Best Sci-Fi Television Series Of All Time
    12,988
    8,075

    The X-Files

    David Duchovny, Gillian Anderson

    Premiered1993

    NetworkFox Broadcasting Company

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  • 10
    The Twilight Zone is listed (or ranked) 10 on the list The Best Sci-Fi Television Series Of All Time
    10,406
    6,664

    The Twilight Zone

    Rod Serling, Robert McCord

    Premiered1959

    NetworkUPN, CBS

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  • 11
    Stargate Atlantis is listed (or ranked) 11 on the list The Best Sci-Fi Television Series Of All Time
    9,998
    6,309

    Stargate Atlantis

    Joe Flanigan, Rachel Luttrell

    Premiered2004

    NetworkSyfy

    Be sure to check out our list of the best Stargate Atlantis episodes.

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  • 12
    Farscape is listed (or ranked) 12 on the list The Best Sci-Fi Television Series Of All Time
    11,119
    7,153

    Farscape

    Ben Browder, Claudia Black

    Premiered1999

    NetworkSyfy, Nine Network

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    The Best Farscape CharactersThe Best Seasons of Farscape

  • 13
    The Expanse is listed (or ranked) 13 on the list The Best Sci-Fi Television Series Of All Time
    10,609
    4,461

    The Expanse

    Thomas Jane, Steven Strait

    Premiered2015

    NetworkSyfy

    amazon buy button
  • 14
    Star Trek: Enterprise is listed (or ranked) 14 on the list The Best Sci-Fi Television Series Of All Time
    9,039
    6,050

    Star Trek: Enterprise

    Scott Bakula, John Billingsley

    Premiered2001

    NetworkUPN

    amazon buy button
  • 15
    Quantum Leap is listed (or ranked) 15 on the list The Best Sci-Fi Television Series Of All Time
    8,820
    5,916

    Quantum Leap

    Scott Bakula, Dean Stockwell

    Premiered1989

    NetworkNBC

    amazon buy button
  • 16
    Futurama is listed (or ranked) 16 on the list The Best Sci-Fi Television Series Of All Time
    9,883
    6,699

    Futurama

    Billy West, John DiMaggio

    Premiered1999

    NetworkComedy Central, Fox Broadcasting Company

    amazon buy button

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    Small But Clever Details From Futurama That Fans Noticed#13 of 17 Longest Running Animated Series

  • 17
    Babylon 5 is listed (or ranked) 17 on the list The Best Sci-Fi Television Series Of All Time
    12,306
    8,472

    Babylon 5

    Jerry Doyle, Mira Furlan

    Premiered1994

    NetworkPrime Time Entertainment Network, TNT

    amazon buy button
  • 18
    Fringe is listed (or ranked) 18 on the list The Best Sci-Fi Television Series Of All Time
    10,407
    7,175

    Fringe

    Anna Torv, Joshua Jackson

    Premiered2008

    NetworkFox

    amazon buy button

    More Fringe 

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  • 19
    Battlestar Galactica is listed (or ranked) 19 on the list The Best Sci-Fi Television Series Of All Time
    8,316
    5,618

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered1978

    NetworkAmerican Broadcasting Company

    amazon buy button

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    #59 of 537 TV Shows Canceled Before Their Time#5 of 300 The Best Shows Canceled After a Single Season

  • 20
    Warehouse 13 is listed (or ranked) 20 on the list The Best Sci-Fi Television Series Of All Time
    7,604
    5,420

    Warehouse 13

    Eddie McClintock, Joanne Kelly

    Premiered2009

    NetworkSyfy

    amazon buy button
  • 21
    Stranger Things is listed (or ranked) 21 on the list The Best Sci-Fi Television Series Of All Time
    6,661
    2,384

    Stranger Things

    Winona Ryder, David Harbour

    Premiered2016

    NetworkNetflix

    amazon buy button

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  • 22
    Eureka is listed (or ranked) 22 on the list The Best Sci-Fi Television Series Of All Time
    8,210
    5,914

    Eureka

    Colin Ferguson, Salli Richardson-Whitfield

    Premiered2006

    NetworkSyfy

    amazon buy button
  • 23
    Red Dwarf is listed (or ranked) 23 on the list The Best Sci-Fi Television Series Of All Time
    6,653
    5,213

    Red Dwarf

    Chris Barrie, Craig Charles

    Premiered1988

    NetworkBritish Broadcasting Corporation, Dave

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  • 24
    Torchwood is listed (or ranked) 24 on the list The Best Sci-Fi Television Series Of All Time
    7,372
    6,104

    Torchwood

    John Barrowman, Eve Myles

    Premiered2006

    NetworkBritish Broadcasting Corporation, BBC One, Starz, BBC HD, BBC Three

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  • 25
    Agents of S.H.I.E.L.D. is listed (or ranked) 25 on the list The Best Sci-Fi Television Series Of All Time
    5,986
    4,310

    Agents of S.H.I.E.L.D.

    Clark Gregg, Ming-Na Wen

    Premiered2013

    NetworkABC

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