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
+ - 6,621 3,189
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
+ - 8,872 3,778
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
+ - 7,906 3,193
Battlestar Galactica is listed (or ranked) 3 on the list The Best Sci Fi Television Series of All Time
Battlestar Galactica Edward James Olmos, Mary McDonnell, Jamie Bamber

4
+ - 5,690 2,466
Star Trek: The Original Series is listed (or ranked) 4 on the list The Best Sci Fi Television Series of All Time
Star Trek: The Original Series William Shatner, Leonard Nimoy, DeForest Kelley

5
+ - 6,840 3,861
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
+ - 5,904 2,649
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
+ - 6,072 2,417
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
+ - 4,090 2,218
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
+ - 3,965 2,401
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
+ - 5,162 4,095
Babylon 5 is listed (or ranked) 10 on the list The Best Sci Fi Television Series of All Time
Babylon 5 Jerry Doyle, Mira Furlan, Richard Biggs

11
+ - 4,783 2,740
Fringe is listed (or ranked) 11 on the list The Best Sci Fi Television Series of All Time
Fringe Anna Torv, Joshua Jackson, Jasika Nicole

12
+ - 4,106 2,558
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
+ - 3,793 2,217
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
+ - 3,253 2,133
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
+ - 3,481 1,926
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
+ - 3,374 1,960
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
+ - 3,776 2,417
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
+ - 2,892 2,328
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
+ - 3,089 2,167
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
+ - 3,380 3,269
Lost is listed (or ranked) 20 on the list The Best Sci Fi Television Series of All Time
Lost Naveen Andrews, Matthew Fox, Jorge Garcia

21
+ - 2,996 2,631
Heroes is listed (or ranked) 21 on the list The Best Sci Fi Television Series of All Time
Heroes Hayden Panettiere, Jack Coleman, Milo Ventimiglia

22
+ - 1,730 738
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
+ - 2,141 1,758
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
+ - 2,641 1,917
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
+ - 2,563 2,053
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
+ - 2,152 1,735
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
+ - 2,150 1,936
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
+ - 2,404 2,072
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
+ - 744 333
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
+ - 2,153 1,733
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
+ - 1,327 385
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
+ - 1,467 1,197
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
+ - 1,649 1,531
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
+ - 1,892 1,548
Falling Skies is listed (or ranked) 34 on the list The Best Sci Fi Television Series of All Time
Falling Skies Noah Wyle, Drew Roy, Maxim Knight

35
+ - 1,627 1,448
Continuum is listed (or ranked) 35 on the list The Best Sci Fi Television Series of All Time
Continuum Rachel Nichols, Stephen Lobo, Victor Webster

36
+ - 1,784 1,923
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
+ - 1,459 1,176
Buck Rogers in the 25th Centur... is listed (or ranked) 37 on the list The Best Sci Fi Television Series of All Time
Buck Rogers in the 25th Century Gil Gerard, Erin Gray, Felix Silla

38
+ - 1,847 1,654
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
+ - 1,687 1,877
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
+ - 1,737 1,720
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
+ - 1,057 397
The Magicians is listed (or ranked) 41 on the list The Best Sci Fi Television Series of All Time
The Magicians Barry Jones

42
+ - 833 548
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
+ - 1,451 1,389
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
+ - 1,627 1,716
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
+ - 1,311 1,235
Dune is listed (or ranked) 45 on the list The Best Sci Fi Television Series of All Time
Dune William Hurt, Alec Newman, Giancarlo Giannini

46
+ - 1,253 1,308
The Incredible Hulk is listed (or ranked) 46 on the list The Best Sci Fi Television Series of All Time
The Incredible Hulk Bill Bixby, Lou Ferrigno, Jack Colvin

47
+ - 1,672 1,585
3rd Rock from the Sun is listed (or ranked) 47 on the list The Best Sci Fi Television Series of All Time
3rd Rock from the Sun John Lithgow, Jane Curtin, Kristen Johnston

48
+ - 1,325 1,086
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
+ - 1,106 976
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
+ - 1,516 1,391
Terra Nova is listed (or ranked) 50 on the list The Best Sci Fi Television Series of All Time
Terra Nova Jason O'Mara, Shelley Conn, Christine Adams