Series with the first letter - "T"
- The Inspector Lynley Mysteries (2001–2008)
- The Interest of Love (2022–…)
- The Interrogator (2019–…)
- The Invaders (1967–1968)
- The Ipcress File (2022–…)
- The Irony of Fate, or Enjoy Your Bath! (1976)
- The Island (2010–…)
- The IT Crowd (2006–2013)
- The Jeffersons (1975–1985)
- The Jellies! (2017–…)
- The Jeremy Kyle Show (2005–2019)
- The Jetsons (1962–1963)
- The Jewel in the Crown (1984)
- The Jim Henson Hour (1989–1992)
- The Jinx: The Life and Deaths of Robert Durst (2015)
- The Job (2001–2002)
- The Journalist (2022–…)
- The Jury (2002–2011)
- The K2 (2016)
- The Kardashians (2022–…)
- The Kennedys After Camelot (2017)
- The Kettering Incident (2016–…)
- The Kids Are Alright (2018–…)
- The Kill Point (2007)
- The Killer Beside Me (2018–…)
- The Killer Truth (2020)
- The Killing (2007–2012)
- The Killing (2011–2014)
- The King of Dramas (2012–2013)
- The King of Queens (1998–2007)