Series with the first letter - "T"
- The Secret Garden (1975–…)
- The Secret Life of Birds (2011–…)
- The Secret Life of Couples (2017–…)
- The Secret Life of the American Teenager (2008–2013)
- The Secret Life of Us (2001–2006)
- The Secret of Skinwalker Ranch (2020–…)
- The Secret War (1977–1978)
- The Secrets She Keeps (2020–…)
- The Serpent Queen (2022)
- The Seven Deadly Sins (2014–2021)
- The Seventies (2015)
- The Sex Lives of College Girls (2021–…)
- The Shadow Line (2011)
- The Shannara Chronicles (2016–…)
- The Shield (2002–2008)
- The Shining (1997)
- The Shivering Truth (2017)
- The Shop (2018–…)
- The Shrink Next Door (2021–…)
- The Silent Sea (2021–…)
- The Silent Valley (2016–…)
- The Silent War (2013–…)
- The Simpsons (1989–…)
- The Sinner (2017–…)
- The Six Million Dollar Man (1974–1978)
- The Six Wives of Henry VIII (1970)
- The Slap (2015–…)
- The Smoke (2014)
- The Smurfs (2021–…)
- The Snoopy Show (2021–…)