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The Best Sci-Fi Action TV Shows Ever

Updated November 11, 2020 3.8k votes 284 voters 4.6k views68 items

List RulesVote up your favorite action-packed science fiction shows that have aired on television.

The best science fiction action shows are a perfect storm of futuristic imagination and out-of-this-world excitement. The best sci-fi action series ever shown on television pull you to the edge of your seat like a UFO's tractor beam. If you’ve been looking for the best sci-fi action to add some fun to your TV nights, this list of the best science fiction action series of all time will help you figure out what needs to go into your queue.

The really good sci-fi action shows have our heroes battling aliens, space ships and - of course - each other. All that cool tech and cooler space ships are the perfect props for a fight scene. And, on shows where they're on a new world every episode, like Stargate? That is a fresh setting for action and adventure. From more traditional sci-fi like Battlestar Galactica (either of them) to science fiction-styled superheroes as Legends of Tomorrow, action science fiction shows are unstoppable.

Which shows balance action and sci-fi the best? Vote up the best science fiction action shows and vote down the shows that don't deliver cool fights and a breakneck pace with their technological dream.

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  • 1
    Battlestar Galactica
    125
    48

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered2004

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  • 2
    The Expanse
    98
    30

    The Expanse

    Thomas Jane, Steven Strait

    Premiered2015

  • 3
    Firefly
    74
    15

    Firefly

    Nathan Fillion, Gina Torres

    Premiered2002

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  • 4
    Stargate SG-1
    88
    39

    Stargate SG-1

    Richard Dean Anderson, Michael Shanks

    Premiered1997

  • 5
    Stargate Atlantis
    76
    31

    Stargate Atlantis

    Joe Flanigan, Rachel Luttrell

    Premiered2004

  • 6
    Star Trek: Enterprise
    74
    34

    Star Trek: Enterprise

    Scott Bakula, John Billingsley

    Premiered2001

  • 7
    Star Trek: The Next Generation
    89
    47

    Star Trek: The Next Generation

    Patrick Stewart, Brent Spiner

    Premiered1987

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  • 8
    Continuum
    62
    32

    Continuum

    Rachel Nichols, Stephen Lobo

    Premiered2012

  • 9
    Babylon 5
    59
    32

    Babylon 5

    Jerry Doyle, Mira Furlan

    Premiered1994

  • 10
    Altered Carbon
    64
    37

    Altered Carbon

    Joel Kinnaman, Renée Elise Goldsberry

    Premiered2018

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  • 11
    Lost in Space
    55
    29

    Lost in Space

    Toby Stephens, Molly Parker

    Premiered2018

  • 12
    Battlestar Galactica
    58
    33

    Battlestar Galactica

    Edward James Olmos, Mary McDonnell

    Premiered1978

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  • 13
    Star Trek: Deep Space Nine
    55
    31

    Star Trek: Deep Space Nine

    Avery Brooks, Rene Auberjonois

    Premiered1993

  • 14
    Falling Skies
    48
    24

    Falling Skies

    Noah Wyle, Drew Roy

    Premiered2011

  • 15
    The Mandalorian
    35
    11

    The Mandalorian

    Pedro Pascal, Gina Carano

    Premiered2019

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  • 16
    Andromeda
    55
    35

    Andromeda

    Kevin Sorbo, Lisa Ryder

    Premiered2000

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  • 17
    Star Trek: Voyager
    56
    36

    Star Trek: Voyager

    Kate Mulgrew, Robert Beltran

    Premiered1995

  • 18
    Dark Angel
    50
    30

    Dark Angel

    Jessica Alba, Michael Weatherly

    Premiered2000

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  • 19
    Dark Matter
    38
    19

    Dark Matter

    Marc Bendavid, Melissa O'Neil

    Premiered2015

  • 20
    Quantum Leap
    52
    35

    Quantum Leap

    Scott Bakula, Dean Stockwell

    Premiered1989

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  • 21
    Westworld
    37
    20

    Westworld

    Evan Rachel Wood, Thandie Newton

    Premiered2016

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  • 22
    Star Trek: Discovery
    54
    40

    Star Trek: Discovery

    Sonequa Martin-Green, Doug Jones

    Premiered2017

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  • 23
    Killjoys
    33
    23

    Killjoys

    Hannah John-Kamen, Aaron Ashmore

    Premiered2015

  • 24
    Star Trek: Picard
    18
    7

    Star Trek: Picard

    Patrick Stewart, Santiago Cabrera

    Premiered2020

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  • 25
    Knight Rider
    40
    34

    Knight Rider

    David Hasselhoff, Edward Mulhare

    Premiered1982