Series with the first letter - "M"
- Mr. Robot (2015–…)
- Mr. Sloane (2014–…)
- Mr. Sunshine (2011–2012)
- Mr. Sunshine (2018–…)
- Mr. Unlucky Has No Choice But to Kiss! (2022)
- Mrs. America (2020–…)
- Mrs. Brown's Boys (2011–…)
- Mrs. Fletcher (2019–…)
- Ms. Marvel (2022–…)
- Muhammad Ali (2021)
- Mulaney (2014–2015)
- Multiple Personality Detective Psycho - Kazuhiko Amamiya Returns (2000–…)
- Mum (2016–…)
- Muñeca brava (1998–1999)
- Munich Games (2022–…)
- Murdaugh Murders: Deadly Dynasty (2022–…)
- Murder 101 (2006–…)
- Murder by the Lake (2014–…)
- Murder in Mind (2001–2003)
- Murder in Provence (2022–…)
- Murder in Successville (2015–2017)
- Murder in the First (2014–2016)
- Murder in the Thirst (2019–…)
- Murder Loves Company (2019–…)
- Murder on Middle Beach (2020–…)
- Murder One (1995–1997)
- Murder Rooms: Mysteries of the Real Sherlock Holmes (2000–2001)
- Murder Under the Friday Night Lights (2022–…)
- Murder, Mystery and My Family (2018–…)
- Murder, She Wrote (1984–1996)