This is an inclusive list of science fiction television programs whose names begin with the letter T.

Live-action

• Taken (2002, miniseries)
• Tales from the Darkside (1983–1988, anthology)
• Tales from the Loop
• Tales of the Unexpected (1979–1988, UK, anthology)
• Tales of Tomorrow (1951–1953, anthology)
• Target Luna (franchise):^[1]
  • Target Luna (1960, UK)^[2] IMDb
  • Pathfinders in Space (1960, UK, Target Luna sequel)^[3] IMDb
  • Pathfinders to Mars (1960–1961, UK, Pathfinders in Space sequel) IMDb
  • Pathfinders to Venus (1961, UK, Pathfinders to Mars sequel) IMDb
• Tattooed Teenage Alien Fighters from Beverly Hills (1994)
• Teen Titans (franchise):
• Teenage Caveman (2002, film)
• Ninja Turtles: The Next Mutation a.k.a. NT:TNM (1997–1998)
• TekWar (franchise):
  • Tekwar a.k.a. Tekwar: The Movie (1994, Canada/US, first film)
  • TekWar: TekLords a.k.a. TekLords (1994, Canada/US, second film)
  • TekLab (1994, Canada/US, third film)
  • TekJustice a.k.a. Tekjustice: The Final Showdown (1994, Canada/US, fourth film)
  • TekWar (1995–1996, Canada/US)
• Tenchi Muyo! (franchise) (elements of science fiction):
• Terminator: The Sarah Connor Chronicles (2008–2009)
• Terra Nova (2011)
• Terrahawks (1983–1986, UK, puppetry)
• Tetsujin 28-go (1960, Japan)
• That Was Then (2002)
• They Came from Outer Space (1990–1991)
• Third Eye, The (1981–1983, anthology)
• This Is Not My Life (2010, New Zealand)
• Three-Body Problem, The (franchise):
  • Three-Body (2023, China)
  • Three-Body Problem, The (2023)
• Three Moons Over Milford (2006)
• Threshold (2005–2006)
• Thunderbirds (1965–1966, UK, puppetry)
• Thunderstone (1999–2000, Australia)
• Tick, The (2001–2002) (elements of science fiction)
• Time After Time (2017)
• Time Express (1979) (elements of science fiction)
• Time Riders (1991, UK) IMDb
• Time Trax (1993–1994)
• Time Tunnel, The (franchise):
  • Time Tunnel, The (1966–1967)
  • Time Travelers (1976, remake, pilot, film)
  • Time Tunnel, The (2002, pilot)
• Timecop (1997–1998)
• Timelapse (1980, Australia) IMDb
• Timeless (2016–2018)
• Timeslip (1970, UK)
• Timestalkers (1987, film)
• Tin Man (2007, miniseries)
• Titans (2018-2023)
• Tom Corbett, Space Cadet (1950–1955)
• Tom Smothers' Organic Prime Time Space Ride (1971)^[4] IMDb
• Tommyknockers, The (1993, miniseries)
• Tomorrow People, The (franchise):
  • Tomorrow People, The (1973–1979, UK)
  • Tomorrow People, The (1992–1995, Canada)
  • Tomorrow People, The (2013–2014)
• Total Recall 2070 (1999, Canada)
• Tracker (2001–2002, Canada)
• Tremors (franchise):
  • Tremors (2003)
  • Tremors 4: The Legend Begins (2004, prequel, film)
• Triangle, The (2005, miniseries)
• Tribe, The (franchise):
  • New Tomorrow, The (2006, New Zealand, Tribe, The sequel)
  • Tribe, The (1999–2003, New Zealand)
• Tripods, The (1984–1985, UK/Australia)
• Tru Calling (2003–2005) (elements of science fiction)
• Travelers (2016–2018, Canada)
• Turnabout (1979) IMDb
• Twice in a Lifetime (1999–2001, Canada)
• Twilight Zone, The (anthology) (franchise):
  • Twilight Zone, The (1959–1964, anthology)
  • Twilight Zone, The (1985–1989, anthology)
  • Twilight Zone, The (2002-2003, anthology)
  • Twilight Zone, The (2019-2020, anthology)
• Twisted Tales (1996)

Animated

• Tales from the Cryptkeeper (1993–1997, anthology, animated)
• Team Galaxy a.k.a. Le Collège de l'Espace (France) a.k.a. Galaxie Académie (Canada) (2006–2007, France/Italy/Canada, animated)
• Teen Titans (franchise):
  • Teen Titans (2003–2006, animated)
  • New Teen Titans (2012, animated)
  • Teen Titans Go! (2013–present, animated)
• Teenage Mutant Ninja Turtles a.k.a. TMNT (franchise):
  • Teenage Mutant Ninja Turtles (1987–1996, US/Japan, animated)
  • Teenage Mutant Ninja Turtles (2003–2009, animated):
  • Teenage Mutant Ninja Turtles: Turtles Forever a.k.a. TMNT: Turtles Forever (2009, animated film)
  • Teenage Mutant Ninja Turtles (2012–2017, animated)
  • Rise of the Teenage Mutant Ninja Turtles (2018-2020, animated)
• Tekkaman (franchise):
  • Tekkaman: The Space Knight (1975, Japan, animated)
  • Tekkaman Blade a.k.a. Teknoman (1992–1993, Japan, animated)
  • Tenchi Universe (1995, Japan, animated)
  • Tenchi in Tokyo (1997, Japan, animated)
  • Tenchi Muyo! GXP (2002, Japan, animated)
• Terra Formars (2014, Japan, animated)
• Tetsujin-28 (franchise):
  • Tetsujin 28-go (1963–1966, Japan, animated)
  • Gigantor (1963–1966, US, adaptation, animated)
  • Shin Tetsujin 28-go (1980–1981, Japan, animated) a.k.a. New Adventures of Gigantor, The (US)
  • Tetsujin 28 FX (1992–1993, Japan, animated)
  • Tetsujin-28 (2004, Japan, animated)
• Tetsuwan Birdy: Decode (2008–2009, Japan, animated)
• Texhnolyze (2003, Japan, animated)
• Thundarr the Barbarian (1980–1982, animated)
• ThunderCats (franchise):
  • ThunderCats (1985–1990, animated)
  • ThunderCats (2011–2012, US/Japan, animated)
• Tick, The a.k.a. Tick: The Animated Series, The (1994–1996, animated) (elements of science fiction in some episodes)
• Tide-Line Blue (2005, Japan, animated)
• Time Bokan (franchise):
  • Time Bokan (1975–1976, Japan, animated)
  • Yatterman (1975–1979, Japan, animated, spin-off)
  • Zenderman (1979–1980, Japan, animated)
  • Rescueman (1980–1981, Japan, animated)
  • Yattodetaman (1981–1982, Japan, animated)
  • Gyakuten! Ippatsuman (1982–1983, Japan, animated)
  • Itadakiman (1982–1983, Japan, animated)
  • Time Bokan 2000: Kaitou Kiramekiman (2000, Japan, animated)
  • Yatterman (2008–2009, Japan, animated, remake)
• Time Jam: Valerian & Laureline (2007–2008, France/Japan, animated)
• Time Squad (2001–2003, animated)
• Time Warp Trio (2005–2006, animated)
• Titan Maximum (2009, stop-motion animation)
• TO (2009, Japan, television OVA, animated)^[5]
• Toaru Majutsu no Index (franchise):
  • Toaru Majutsu no Index (2008–2011, Japan, animated)
  • A Certain Scientific Railgun (2009–2010, Japan, animated)
• Tokyo Underground (2002, Japan, animated)
• Toonami: Total Immersion Events a.k.a. TIEs (franchise) (animated):
  • Intruder, The (2000, interactive, special, micro-series, animated)^[6]
  • Lockdown (2001, interactive, special, micro-series, animated)^[7]
  • Trapped in Hyperspace (2002, interactive, special, micro-series, animated)^[8]
  • Immortal Grand Prix a.k.a. IGPX (2003, Japan/US, interactive, special, micro-series, animated)^[9]
  • Immortal Grand Prix a.k.a. IGPX (2005–2006, Japan/US, animated)
• Tōshō Daimos (1978–1979, Japan, animated)
• Toward the Terra (2007, Japan, animated)
• Toxic Crusaders (1991, animated)
• Transformers (franchise):
  • Transformers, The a.k.a. Transformers: Generation 1 a.k.a. Transformers: G1 (1984–1987, animated)
  • Transformers: Generation 2 a.k.a. Transformers: G2 (1993–1995, modified Transformers: G1 rebroadcast, animated)
  • Transformers: The Headmasters (1987–1988, Japan, animated)
  • Transformers: Super-God Masterforce (1988–1989, Japan, animated)
  • Transformers: Victory (1989, Japan, animated)
  • Beast Wars: Transformers (1996–1999, animated)
  • Beast Wars II: Chō Seimeitai Transformers a.k.a. Beast Wars II: Super Life-form Transformers (1998, Japan, animated)
  • Beast Wars Neo (1998–1999, Japan, animated)
  • Beast Machines (1998–2000, Canada/US, animated)
  • Transformers: Robots in Disguise (2000–2001, Japan/US, animated) a.k.a. Transformers: Car Robot (Japan)
  • Transformers: Armada a.k.a. Super Robot Lifeform Transformers: Micron Legend (2001–2003, Japan, animated)
  • Transformers: Energon a.k.a. Transformers: Superlink (2004–2005, Japan, animated)
  • Transformers: Cybertron a.k.a. Transformers: Galaxy Force (2005–2006, Japan, animated)
  • Transformers Animated (2007–2009, US/Japan, animated)
  • Transformers: Prime a.k.a. Transformers: Prime – The Animated Series (2010–2012, US/Japan, animated)
  • Transformers: Rescue Bots (2012–2016, US/Japan, animated)
  • Transformers: Robots in Disguise (2015–2017, animated)
  • Transformers: Cyberverse (2018-2020, animated)
• Trider G7 (1980–1981, Japan, animated)
• Trigun (1998, Japan, animated)
• Tripping the Rift (2004–2007, Canada, animated)
• Tron: Uprising (2012–2013, animated)
• Tytania (2008–2009, Japan, animated)