Total Nerd 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.

list ordered by

1
+ - 10,411 4,728
Firefly is listed (or ranked) 1 on the list The Best Sci Fi Television Series of All Time
Firefly Nathan Fillion, Gina Torres, Alan Tudyk

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2
+ - 7,733 4,120
Star Trek: The Next Generation is listed (or ranked) 2 on the list The Best Sci Fi Television Series of All Time
Star Trek: The Next Generation Patrick Stewart, Brent Spiner, Jonathan Frakes

3
+ - 8,100 4,717
Doctor Who is listed (or ranked) 3 on the list The Best Sci Fi Television Series of All Time
Doctor Who Peter Capaldi, Jenna Coleman, Matt Smith

4
+ - 9,203 4,071
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
+ - 6,608 3,279
Star Trek: The Original Series is listed (or ranked) 5 on the list The Best Sci Fi Television Series of All Time
Star Trek: The Original Series William Shatner, Leonard Nimoy, DeForest Kelley

6
+ - 6,787 3,522
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
+ - 7,129 3,144
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
+ - 4,874 2,992
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
+ - 6,462 5,007
Babylon 5 is listed (or ranked) 9 on the list The Best Sci Fi Television Series of All Time
Babylon 5 Jerry Doyle, Mira Furlan, Richard Biggs

10
+ - 4,780 3,128
Star Trek: Deep Space Nine is listed (or ranked) 10 on the list The Best Sci Fi Television Series of All Time
Star Trek: Deep Space Nine Avery Brooks, Rene Auberjonois, Cirroc Lofton

11
+ - 4,894 3,168
Farscape is listed (or ranked) 11 on the list The Best Sci Fi Television Series of All Time
Farscape Ben Browder, Claudia Black, Anthony Simcoe

12
+ - 5,496 3,433
Fringe is listed (or ranked) 12 on the list The Best Sci Fi Television Series of All Time
Fringe Anna Torv, Joshua Jackson, Jasika Nicole

13
+ - 3,889 2,700
Quantum Leap is listed (or ranked) 13 on the list The Best Sci Fi Television Series of All Time
Quantum Leap Scott Bakula, Dean Stockwell, Deborah Pratt

14
+ - 4,448 2,860
Star Trek: Voyager is listed (or ranked) 14 on the list The Best Sci Fi Television Series of All Time
Star Trek: Voyager Kate Mulgrew, Robert Beltran, Roxann Dawson

15
+ - 4,141 2,512
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
+ - 3,993 2,569
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
+ - 4,573 3,027
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
+ - 3,505 2,913
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
+ - 3,727 2,731
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
+ - 3,859 4,048
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
+ - 3,456 3,292
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
+ - 3,212 2,451
Warehouse 13 is listed (or ranked) 22 on the list The Best Sci Fi Television Series of All Time
Warehouse 13 Eddie McClintock, Joanne Kelly, Saul Rubinek

23
+ - 2,549 2,303
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
+ - 2,481 1,216
Battlestar Galactica is listed (or ranked) 24 on the list The Best Sci Fi Television Series of All Time
Battlestar Galactica Edward James Olmos, Mary McDonnell, Jamie Bamber

25
+ - 2,863 2,444
Red Dwarf is listed (or ranked) 25 on the list The Best Sci Fi Television Series of All Time
Red Dwarf Chris Barrie, Craig Charles, Danny John-Jules

26
+ - 2,976 2,627
V is listed (or ranked) 26 on the list The Best Sci Fi Television Series of All Time
V Elizabeth Mitchell, Morris Chestnut, Joel Gretsch

27
+ - 2,607 2,243
Sliders is listed (or ranked) 27 on the list The Best Sci Fi Television Series of All Time
Sliders Jerry O'Connell, Sabrina Lloyd, John Rhys-Davies

28
+ - 2,853 2,566
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
+ - 2,562 2,251
Stargate Universe is listed (or ranked) 29 on the list The Best Sci Fi Television Series of All Time
Stargate Universe Robert Carlyle, Louis Ferreira, Brian J. Smith

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30
+ - 1,882 1,588
The Hitchhiker's Guide to the ... is listed (or ranked) 30 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

31
+ - 1,291 781
Agents of S.H.I.E.L.D. is listed (or ranked) 31 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

32
+ - 2,141 2,386
Dollhouse is listed (or ranked) 32 on the list The Best Sci Fi Television Series of All Time
Dollhouse Eliza Dushku, Harry Lennix, Fran Kranz

33
+ - 1,986 1,898
Continuum is listed (or ranked) 33 on the list The Best Sci Fi Television Series of All Time
Continuum Rachel Nichols, Stephen Lobo, Victor Webster

34
+ - 2,276 2,000
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
+ - 1,975 2,298
Space: 1999 is listed (or ranked) 35 on the list The Best Sci Fi Television Series of All Time
Space: 1999 Martin Landau, Barbara Bain, Nick Tate

36
+ - 1,916 1,964
The Six Million Dollar Man is listed (or ranked) 36 on the list The Best Sci Fi Television Series of All Time
The Six Million Dollar Man Lee Majors, Richard Anderson, Martin E. Brooks

37
+ - 774 528
Sense8 is listed (or ranked) 37 on the list The Best Sci Fi Television Series of All Time
Sense8 Aml Ameen, Doona Bae, Jamie Clayton

38
+ - 1,839 1,583
Buck Rogers in the 25th Centur... is listed (or ranked) 38 on the list The Best Sci Fi Television Series of All Time
Buck Rogers in the 25th Century Gil Gerard, Erin Gray, Felix Silla

39
+ - 2,223 2,081
Xena: Warrior Princess is listed (or ranked) 39 on the list The Best Sci Fi Television Series of All Time
Xena: Warrior Princess Lucy Lawless, Renée O'Connor, Ted Raimi

40
+ - 1,971 821
The Expanse is listed (or ranked) 40 on the list The Best Sci Fi Television Series of All Time
The Expanse Shohreh Aghdashloo, Cas Anvar, Wes Chatham

41
+ - 2,091 2,109
Dark Angel is listed (or ranked) 41 on the list The Best Sci Fi Television Series of All Time
Dark Angel Jessica Alba, Michael Weatherly, Richard Gunn

42
+ - 1,928 2,114
Andromeda is listed (or ranked) 42 on the list The Best Sci Fi Television Series of All Time
Andromeda Kevin Sorbo, Lisa Ryder, Laura Bertram

43
+ - 1,732 1,770
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
+ - 1,643 1,594
Dune is listed (or ranked) 44 on the list The Best Sci Fi Television Series of All Time
Dune William Hurt, Alec Newman, Giancarlo Giannini

45
+ - 1,273 925
The Flash is listed (or ranked) 45 on the list The Best Sci Fi Television Series of All Time
The Flash Grant Gustin, Candice Patton, Danielle Panabaker

46
+ - 1,521 1,686
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
+ - 1,958 1,948
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
+ - 1,685 1,455
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
+ - 1,352 1,290
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
+ - 1,833 1,774
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