Series with the first letter - "T"
- The Alfred Hitchcock Hour (1962–1965)
- The Alice (2005–2006)
- The Alienist (2018)
- The Almighty Johnsons (2011–2013)
- The Alzheimer's Project (2009–…)
- The Amazing Chan and the Chan Clan (1972)
- The Amazing Race (2001–…)
- The Amazing Race Australia (2011–…)
- The Amazing Race Canada (2013–…)
- The Amazing World of Gumball (2011–…)
- The American West (2016–…)
- The Americans (2013–2018)
- The Anarchists (2022–…)
- The Andy Griffith Show (1960–1968)
- The Angry Beavers (1997–2001)
- The Angry Video Game Nerd (2004–…)
- The Apprentice (2004–2017)
- The Ark (2023–…)
- The Art of More (2015–…)
- The Art of Spain (2008–…)
- The Assets (2014–…)
- The Astronaut Wives Club (2015)
- The Astronauts (2020–…)
- The Atom Ant Show (1965–1968)
- The Attaché (2019–2020)
- The Avengers (1961–1969)
- The Awesomes (2013–2015)
- The Baby (2022–…)
- The Bachelor (2002–…)
- The Bachelor Australia (2013–…)