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65.4k voters

The Best Sci-Fi Television Series Of All Time

Updated April 9, 2021 1.1m votes 65.4k voters 834.5k views280 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
    22,717
    9,492

    Firefly

    Nathan Fillion, Gina Torres

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  • 2
    16,286
    8,388

    Star Trek: The Next Generation

    Patrick Stewart, Brent Spiner

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  • 3
    16,500
    9,348

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

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  • 4
    14,869
    7,266

    Stargate SG-1

    Richard Dean Anderson, Michael Shanks

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    #4 of 84 The Best Syfy Original Shows#17 of 49 The Best Showtime Shows of All Time, Ranked

  • 5
    15,015
    9,137

    Doctor Who

    Christopher Eccleston, David Tennant

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  • 6
    12,397
    7,620

    Star Trek: The Original Series

    William Shatner, Leonard Nimoy

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  • 7
    11,419
    6,955

    Star Trek: Deep Space Nine

    Avery Brooks, Rene Auberjonois

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  • 8
    10,578
    6,443

    Star Trek: Voyager

    Kate Mulgrew, Robert Beltran

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  • 9
    12,746
    7,850

    The X-Files

    David Duchovny, Gillian Anderson

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  • 10
    10,750
    4,453

    The Expanse

    Thomas Jane, Steven Strait

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  • 11
    10,268
    6,483

    The Twilight Zone

    Rod Serling, Robert McCord

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  • 12
    9,790
    6,175

    Stargate Atlantis

    Joe Flanigan, Rachel Luttrell

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    #47 of 129 Canceled Shows We'd Most Like to See as Movies#24 of 130 The Best Action-Adventure TV Shows

  • 13
    10,853
    6,972

    Farscape

    Ben Browder, Claudia Black

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  • 14
    9,653
    6,543

    Futurama

    Billy West, John DiMaggio

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  • 15
    8,862
    5,887

    Star Trek: Enterprise

    Scott Bakula, John Billingsley

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  • 16
    8,593
    5,760

    Quantum Leap

    Scott Bakula, Dean Stockwell

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    #6 of 56 The Best NBC Dramas of All Time#86 of 397 The Best TV Shows to Rewatch

  • 17
    11,980
    8,181

    Babylon 5

    Jerry Doyle, Mira Furlan

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  • 18
    10,215
    6,968

    Fringe

    Anna Torv, Joshua Jackson

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  • 19
    7,425
    5,280

    Warehouse 13

    Eddie McClintock, Joanne Kelly

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  • 20
    8,126
    5,542

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

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  • 21
    6,645
    2,455

    Stranger Things

    Winona Ryder, David Harbour

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  • 22
    8,029
    5,743

    Eureka

    Colin Ferguson, Salli Richardson-Whitfield

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  • 23
    6,509
    5,075

    Red Dwarf

    Chris Barrie, Craig Charles

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    #224 of 291 The Greatest Sitcoms in Television History#48 of 270 The Best Cult TV Shows of All Time

  • 24
    7,142
    5,909

    Torchwood

    John Barrowman, Eve Myles

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    #203 of 306 The Best TV Shows You Can Watch On HBO Max#4 of 40 The Very Best British Sci Fi Shows, Ranked

  • 25
    5,861
    4,251

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

    Clark Gregg, Ming-Na Wen

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