tv programs The Best Sci Fi Television Series of All Time

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List Rules 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.

1
+ - 6,511 3,108
Star Trek: The Next Generation is listed (or ranked) 1 on the list The Best Sci Fi Television Series of All Time
Star Trek: The Next Generation Patrick Stewart, Brent Spiner Jonathan Frakes

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2
+ - 8,702 3,705
Firefly is listed (or ranked) 2 on the list The Best Sci Fi Television Series of All Time
Firefly Nathan Fillion, Gina Torres Alan Tudyk

3
+ - 5,593 2,408
Star Trek: The Original Series is listed (or ranked) 3 on the list The Best Sci Fi Television Series of All Time
Star Trek: The Original Series William Shatner, Leonard Nimoy DeForest Kelley

4
+ - 7,762 3,135
Battlestar Galactica is listed (or ranked) 4 on the list The Best Sci Fi Television Series of All Time
Battlestar Galactica Edward James Olmos, Mary McDonnell Jamie Bamber

5
+ - 6,738 3,788
Doctor Who is listed (or ranked) 5 on the list The Best Sci Fi Television Series of All Time
Doctor Who Peter Capaldi, Jenna Coleman Matt Smith

6
+ - 5,787 2,602
The X-Files is listed (or ranked) 6 on the list The Best Sci Fi Television Series of All Time
The X-Files David Duchovny, Gillian Anderson Mitch Pileggi

7
+ - 5,952 2,369
Stargate SG-1 is listed (or ranked) 7 on the list The Best Sci Fi Television Series of All Time
Stargate SG-1 Richard Dean Anderson, Michael Shanks Amanda Tapping

8
+ - 4,010 2,177
The Twilight Zone is listed (or ranked) 8 on the list The Best Sci Fi Television Series of All Time
The Twilight Zone Rod Serling, Robert McCord Jay Overholts

9
+ - 3,885 2,347
Star Trek: Deep Space Nine is listed (or ranked) 9 on the list The Best Sci Fi Television Series of All Time
Star Trek: Deep Space Nine Avery Brooks, Rene Auberjonois Cirroc Lofton

10
+ - 4,695 2,681
Fringe is listed (or ranked) 10 on the list The Best Sci Fi Television Series of All Time
Fringe Anna Torv, Joshua Jackson Jasika Nicole

11
+ - 5,087 4,052
Babylon 5 is listed (or ranked) 11 on the list The Best Sci Fi Television Series of All Time
Babylon 5 Jerry Doyle, Mira Furlan Richard Biggs

12
+ - 4,020 2,514
Farscape is listed (or ranked) 12 on the list The Best Sci Fi Television Series of All Time
Farscape Ben Browder, Claudia Black Anthony Simcoe

13
+ - 3,711 2,170
Star Trek: Voyager is listed (or ranked) 13 on the list The Best Sci Fi Television Series of All Time
Star Trek: Voyager Kate Mulgrew, Robert Beltran Roxann Dawson

14
+ - 3,195 2,086
Quantum Leap is listed (or ranked) 14 on the list The Best Sci Fi Television Series of All Time
Quantum Leap Scott Bakula, Dean Stockwell Deborah Pratt

15
+ - 3,400 1,882
Stargate Atlantis is listed (or ranked) 15 on the list The Best Sci Fi Television Series of All Time
Stargate Atlantis Joe Flanigan, Rachel Luttrell David Hewlett

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16
+ - 3,298 1,920
Star Trek: Enterprise is listed (or ranked) 16 on the list The Best Sci Fi Television Series of All Time
Star Trek: Enterprise Scott Bakula, John Billingsley Jolene Blalock

17
+ - 3,702 2,374
Futurama is listed (or ranked) 17 on the list The Best Sci Fi Television Series of All Time
Futurama Billy West, John DiMaggio Katey Sagal

18
+ - 2,844 2,283
Torchwood is listed (or ranked) 18 on the list The Best Sci Fi Television Series of All Time
Torchwood John Barrowman, Eve Myles Kai Owen

19
+ - 3,024 2,131
Eureka is listed (or ranked) 19 on the list The Best Sci Fi Television Series of All Time
Eureka Colin Ferguson, Salli Richardson-Whitfield Erica Cerra

20
+ - 2,947 2,578
Heroes is listed (or ranked) 20 on the list The Best Sci Fi Television Series of All Time
Heroes Hayden Panettiere, Jack Coleman Milo Ventimiglia

21
+ - 3,319 3,213
Lost is listed (or ranked) 21 on the list The Best Sci Fi Television Series of All Time
Lost Naveen Andrews, Matthew Fox Jorge Garcia

22
+ - 1,656 707
Battlestar Galactica is listed (or ranked) 22 on the list The Best Sci Fi Television Series of All Time
Battlestar Galactica Edward James Olmos, Mary McDonnell Jamie Bamber

23
+ - 2,095 1,733
The Outer Limits is listed (or ranked) 23 on the list The Best Sci Fi Television Series of All Time
The Outer Limits Kevin Conway, Joe Pascual

24
+ - 2,587 1,887
Warehouse 13 is listed (or ranked) 24 on the list The Best Sci Fi Television Series of All Time
Warehouse 13 Eddie McClintock, Joanne Kelly Saul Rubinek

25
+ - 2,511 2,027
V is listed (or ranked) 25 on the list The Best Sci Fi Television Series of All Time
V Elizabeth Mitchell, Morris Chestnut Joel Gretsch

26
+ - 2,104 1,701
Sliders is listed (or ranked) 26 on the list The Best Sci Fi Television Series of All Time
Sliders Jerry O'Connell, Sabrina Lloyd John Rhys-Davies

27
+ - 2,117 1,898
Red Dwarf is listed (or ranked) 27 on the list The Best Sci Fi Television Series of All Time
Red Dwarf Chris Barrie, Craig Charles Danny John-Jules

28
+ - 2,365 2,031
Terminator: The Sarah Connor C... is listed (or ranked) 28 on the list The Best Sci Fi Television Series of All Time
Terminator: The Sarah Connor Chronicles Lena Headey, Thomas Dekker Summer Glau

29
+ - 683 296
Agents of S.H.I.E.L.D. is listed (or ranked) 29 on the list The Best Sci Fi Television Series of All Time
Agents of S.H.I.E.L.D. Clark Gregg, Ming-Na Wen Brett Dalton

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30
+ - 2,093 1,693
Stargate Universe is listed (or ranked) 30 on the list The Best Sci Fi Television Series of All Time
Stargate Universe Robert Carlyle, Louis Ferreira Brian J. Smith

31
+ - 1,239 356
The Expanse is listed (or ranked) 31 on the list The Best Sci Fi Television Series of All Time
The Expanse Shohreh Aghdashloo, Cas Anvar Wes Chatham

32
+ - 1,447 1,163
The Hitchhiker's Guide to the ... is listed (or ranked) 32 on the list The Best Sci Fi Television Series of All Time
The Hitchhiker's Guide to the Galaxy Stephen Moore, Simon Jones David Dixon

33
+ - 1,624 1,495
The Six Million Dollar Man is listed (or ranked) 33 on the list The Best Sci Fi Television Series of All Time
The Six Million Dollar Man Lee Majors, Richard Anderson Martin E. Brooks

34
+ - 1,584 1,409
Continuum is listed (or ranked) 34 on the list The Best Sci Fi Television Series of All Time
Continuum Rachel Nichols, Stephen Lobo Victor Webster

35
+ - 1,429 1,145
Buck Rogers in the 25th Centur... is listed (or ranked) 35 on the list The Best Sci Fi Television Series of All Time
Buck Rogers in the 25th Century Gil Gerard, Erin Gray Felix Silla

36
+ - 1,747 1,886
Dollhouse is listed (or ranked) 36 on the list The Best Sci Fi Television Series of All Time
Dollhouse Eliza Dushku, Harry Lennix Fran Kranz

37
+ - 1,836 1,519
Falling Skies is listed (or ranked) 37 on the list The Best Sci Fi Television Series of All Time
Falling Skies Noah Wyle, Drew Roy Maxim Knight

38
+ - 1,806 1,621
Xena: Warrior Princess is listed (or ranked) 38 on the list The Best Sci Fi Television Series of All Time
Xena: Warrior Princess Lucy Lawless, Renée O'Connor Ted Raimi

39
+ - 1,664 1,841
Space: 1999 is listed (or ranked) 39 on the list The Best Sci Fi Television Series of All Time
Space: 1999 Martin Landau, Barbara Bain Nick Tate

40
+ - 1,687 1,694
Dark Angel is listed (or ranked) 40 on the list The Best Sci Fi Television Series of All Time
Dark Angel Jessica Alba, Michael Weatherly Richard Gunn

41
+ - 1,025 367
The Magicians is listed (or ranked) 41 on the list The Best Sci Fi Television Series of All Time
The Magicians Barry Jones

42
+ - 792 514
The Flash is listed (or ranked) 42 on the list The Best Sci Fi Television Series of All Time
The Flash Grant Gustin, Candice Patton Danielle Panabaker

43
+ - 1,423 1,359
Lost in Space is listed (or ranked) 43 on the list The Best Sci Fi Television Series of All Time
Lost in Space Guy Williams, June Lockhart Mark Goddard

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44
+ - 1,584 1,690
Andromeda is listed (or ranked) 44 on the list The Best Sci Fi Television Series of All Time
Andromeda Kevin Sorbo, Lisa Ryder Laura Bertram

45
+ - 1,641 1,546
3rd Rock from the Sun is listed (or ranked) 45 on the list The Best Sci Fi Television Series of All Time
3rd Rock from the Sun John Lithgow, Jane Curtin Kristen Johnston

46
+ - 1,280 1,204
Dune is listed (or ranked) 46 on the list The Best Sci Fi Television Series of All Time
Dune William Hurt, Alec Newman Giancarlo Giannini

47
+ - 1,221 1,277
The Incredible Hulk is listed (or ranked) 47 on the list The Best Sci Fi Television Series of All Time
The Incredible Hulk Bill Bixby, Lou Ferrigno Jack Colvin

48
+ - 1,294 1,053
Highlander: The Series is listed (or ranked) 48 on the list The Best Sci Fi Television Series of All Time
Highlander: The Series Adrian Paul, Stan Kirsch Jim Byrnes

49
+ - 1,072 946
Planet of the Apes is listed (or ranked) 49 on the list The Best Sci Fi Television Series of All Time
Planet of the Apes Roddy McDowall, Ron Harper James Naughton

50
+ - 1,376 1,533
Mystery Science Theater 3000 is listed (or ranked) 50 on the list The Best Sci Fi Television Series of All Time
Mystery Science Theater 3000 Joel Hodgson, Michael J. Nelson Trace Beaulieu