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The Best Sci-Fi Television Series Of All Time

Updated January 20, 2021 1.2m votes 64.8k voters 828.0k views298 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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  • Firefly1
    23,590
    9,797

    Firefly

    Nathan Fillion, Gina Torres

    Premiered2002

    NetworkFox Broadcasting Company

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  • Star Trek: The Next Generation2
    16,831
    8,711

    Star Trek: The Next Generation

    Patrick Stewart, Brent Spiner

    Premiered1987

    NetworkCBS

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  • Stargate SG-13
    15,367
    7,452

    Stargate SG-1

    Richard Dean Anderson, Michael Shanks

    Premiered1997

    NetworkShowtime, Syfy

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  • Battlestar Galactica4
    16,776
    9,602

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered2004

    NetworkSyfy

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  • Doctor Who5
    15,602
    9,469

    Doctor Who

    Christopher Eccleston, David Tennant

    Premiered1963

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

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  • Star Trek: Deep Space Nine6
    11,780
    7,170

    Star Trek: Deep Space Nine

    Avery Brooks, Rene Auberjonois

    Premiered1993

    NetworkUPN

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  • Star Trek: The Original Series7
    12,844
    7,867

    Star Trek: The Original Series

    William Shatner, Leonard Nimoy

    Premiered1966

    NetworkNBC

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  • Star Trek: Voyager8
    10,890
    6,662

    Star Trek: Voyager

    Kate Mulgrew, Robert Beltran

    Premiered1995

    NetworkUPN

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  • The X-Files9
    13,140
    8,122

    The X-Files

    David Duchovny, Gillian Anderson

    Premiered1993

    NetworkFox Broadcasting Company

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  • The Twilight Zone10
    10,406
    6,705

    The Twilight Zone

    Rod Serling, Robert McCord

    Premiered1959

    NetworkUPN, CBS

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  • Farscape11
    11,235
    7,218

    Farscape

    Ben Browder, Claudia Black

    Premiered1999

    NetworkSyfy, Nine Network

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  • Stargate Atlantis12
    10,119
    6,359

    Stargate Atlantis

    Joe Flanigan, Rachel Luttrell

    Premiered2004

    NetworkSyfy

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  • The Expanse13
    10,609
    4,461

    The Expanse

    Thomas Jane, Steven Strait

    Premiered2015

    NetworkSyfy

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  • Star Trek: Enterprise14
    9,135
    6,105

    Star Trek: Enterprise

    Scott Bakula, John Billingsley

    Premiered2001

    NetworkUPN

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  • Quantum Leap15
    8,883
    5,972

    Quantum Leap

    Scott Bakula, Dean Stockwell

    Premiered1989

    NetworkNBC

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  • Futurama16
    9,985
    6,757

    Futurama

    Billy West, John DiMaggio

    Premiered1999

    NetworkComedy Central, Fox Broadcasting Company

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  • Babylon 517
    12,414
    8,519

    Babylon 5

    Jerry Doyle, Mira Furlan

    Premiered1994

    NetworkPrime Time Entertainment Network, TNT

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  • Fringe18
    10,521
    7,228

    Fringe

    Anna Torv, Joshua Jackson

    Premiered2008

    NetworkFox

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  • Battlestar Galactica19
    8,316
    5,618

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered1978

    NetworkAmerican Broadcasting Company

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  • Warehouse 1320
    7,674
    5,470

    Warehouse 13

    Eddie McClintock, Joanne Kelly

    Premiered2009

    NetworkSyfy

    Amazon buy button
  • Eureka21
    8,290
    5,959

    Eureka

    Colin Ferguson, Salli Richardson-Whitfield

    Premiered2006

    NetworkSyfy

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  • Stranger Things22
    6,757
    2,449

    Stranger Things

    Winona Ryder, David Harbour

    Premiered2016

    NetworkNetflix

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  • Red Dwarf23
    6,715
    5,257

    Red Dwarf

    Chris Barrie, Craig Charles

    Premiered1988

    NetworkBritish Broadcasting Corporation, Dave

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    #275 of 481 The Funniest TV Shows of All Time#232 of 305 The Greatest Sitcoms in Television History

  • Torchwood24
    7,425
    6,149

    Torchwood

    John Barrowman, Eve Myles

    Premiered2006

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

    Amazon buy button
  • Agents of S.H.I.E.L.D.25
    6,056
    4,356

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

    Clark Gregg, Ming-Na Wen

    Premiered2013

    NetworkABC

    Amazon buy button

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