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
12,514 5,690
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
8,862 4,819
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
9,183 5,527
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
10,476 4,709
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
7,521 3,816
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
7,652 4,116
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
8,193 3,668
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
5,648 3,496
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
7,639 5,725
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
5,857 3,671
Farscape is listed (or ranked) 10 on the list The Best Sci Fi Television Series of All Time
Farscape Ben Browder, Claudia Black, Anthony Simcoe

11
5,589 3,654
Star Trek: Deep Space Nine is listed (or ranked) 11 on the list The Best Sci Fi Television Series of All Time
Star Trek: Deep Space Nine Avery Brooks, Rene Auberjonois, Cirroc Lofton

12
6,142 3,960
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
4,490 3,158
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
5,129 3,371
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
4,772 2,957
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
5,409 3,484
Futurama is listed (or ranked) 16 on the list The Best Sci Fi Television Series of All Time
Futurama Billy West, John DiMaggio, Katey Sagal

17
4,522 3,078
Star Trek: Enterprise is listed (or ranked) 17 on the list The Best Sci Fi Television Series of All Time
Star Trek: Enterprise Scott Bakula, John Billingsley, Jolene Blalock

18
4,026 3,379
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
4,340 3,158
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
4,353 4,765
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
3,917 3,845
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
3,757 2,825
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
3,200 1,579
Battlestar Galactica is listed (or ranked) 23 on the list The Best Sci Fi Television Series of All Time
JimmyPaton added Battlestar Galactica Edward James Olmos, Mary McDonnell, Jamie Bamber

24
2,909 2,657
The Outer Limits is listed (or ranked) 24 on the list The Best Sci Fi Television Series of All Time
Richard777 added The Outer Limits Kevin Conway, Joe Pascual

25
3,420 2,830
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
3,268 3,065
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
3,028 2,606
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
3,229 2,976
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
2,326 1,900
The Hitchhiker's Guide to the ... is listed (or ranked) 29 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

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30
2,950 2,667
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
1,778 1,138
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
nymless added Agents of S.H.I.E.L.D. Clark Gregg, Ming-Na Wen, Brett Dalton

32
2,490 2,769
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
2,628 1,101
The Expanse is listed (or ranked) 33 on the list The Best Sci Fi Television Series of All Time
The Expanse Shohreh Aghdashloo, Cas Anvar, Wes Chatham

34
2,253 2,243
Continuum is listed (or ranked) 34 on the list The Best Sci Fi Television Series of All Time
toddrh added Continuum Rachel Nichols, Stephen Lobo, Victor Webster

35
2,247 2,599
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
2,617 2,359
Falling Skies is listed (or ranked) 36 on the list The Best Sci Fi Television Series of All Time
dustman025 added Falling Skies Noah Wyle, Drew Roy, Maxim Knight

37
2,575 2,405
Xena: Warrior Princess is listed (or ranked) 37 on the list The Best Sci Fi Television Series of All Time
Xena: Warrior Princess Lucy Lawless, Renée O'Connor, Ted Raimi

38
2,157 1,869
Buck Rogers in the 25th Centur... is listed (or ranked) 38 on the list The Best Sci Fi Television Series of All Time
huggums537 added Buck Rogers in the 25th Century Gil Gerard, Erin Gray, Felix Silla

39
2,403 2,389
Dark Angel is listed (or ranked) 39 on the list The Best Sci Fi Television Series of All Time
Dark Angel Jessica Alba, Michael Weatherly, Richard Gunn

40
2,158 2,261
The Six Million Dollar Man is listed (or ranked) 40 on the list The Best Sci Fi Television Series of All Time
The Six Million Dollar Man Lee Majors, Richard Anderson, Martin E. Brooks

41
2,263 2,381
Andromeda is listed (or ranked) 41 on the list The Best Sci Fi Television Series of All Time
Andromeda Kevin Sorbo, Lisa Ryder, Laura Bertram

42
1,062 677
Dark Matter is listed (or ranked) 42 on the list The Best Sci Fi Television Series of All Time
Dark Matter Marc Bendavid, Melissa O'Neil, Anthony Lemke

43
1,987 1,855
Dune is listed (or ranked) 43 on the list The Best Sci Fi Television Series of All Time
Dune William Hurt, Alec Newman, Giancarlo Giannini

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44
1,615 1,204
The Flash is listed (or ranked) 44 on the list The Best Sci Fi Television Series of All Time
The Flash Grant Gustin, Candice Patton, Danielle Panabaker

45
2,014 1,716
Highlander: The Series is listed (or ranked) 45 on the list The Best Sci Fi Television Series of All Time
wiabux added Highlander: The Series Adrian Paul, Stan Kirsch, Jim Byrnes

46
1,044 889
Sense8 is listed (or ranked) 46 on the list The Best Sci Fi Television Series of All Time
Anna Åhlin added Sense8 Aml Ameen, Doona Bae, Jamie Clayton

47
1,131 660
Daredevil is listed (or ranked) 47 on the list The Best Sci Fi Television Series of All Time
nymless added Daredevil Charlie Cox, Vincent D'Onofrio, Deborah Ann Woll

48
1,099 687
Jessica Jones is listed (or ranked) 48 on the list The Best Sci Fi Television Series of All Time
nymless added Jessica Jones Krysten Ritter, Rachael Taylor, Eka Darville

49
1,941 2,044
Lost in Space is listed (or ranked) 49 on the list The Best Sci Fi Television Series of All Time
Lost in Space Guy Williams, June Lockhart, Mark Goddard

50
1,956 2,197
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