Series with the first letter - "T"
- The King's Affection (2021–…)
- The King's Avatar (2017–…)
- The Kingdom (1994–1997)
- The Knick (2014–2015)
- The Kominsky Method (2018–…)
- The L Word (2004–2009)
- The L Word: Generation Q (2019–…)
- The L.A. Complex (2012)
- The Lake Erie Murders (2018–…)
- The Land Before Time (2007–…)
- The Larkins (2021–…)
- The Last Alaskans (2015–…)
- The Last Bus (2022–…)
- The Last Czars (2019–…)
- The Last Dance (2020)
- The Last Days of Ptolemy Grey (2022–…)
- The Last Defense (2018–…)
- The Last Empress (2018–…)
- The Last Enemy (2008)
- The Last King (2003–…)
- The Last Kingdom (2015–…)
- The Last Leg (2012–…)
- The Last Man on Earth (2015–2018)
- The Last Narc (2020–…)
- The Last O.G. (2018–…)
- The Last of Us (2023–…)
- The Last Post (2017–…)
- The Last Ship (2014–…)
- The Last Shot (2017)
- The Last Weekend (2012–…)