Season 1 refers to a number of seasons from different series:
- The only season of The Flash; aired September 20, 1990 – May 18, 1991.
- The only season of Birds of Prey; aired October 9, 2002 – February 19, 2003.
- Season 1 (Arrow), the first season of Arrow; aired October 10, 2012 – May 15, 2013.
- Season 1 (The Flash), the first season of The Flash; aired October 7, 2014 – May 19, 2015.
- The only season of Constantine; aired October 24, 2014 – February 13, 2015.
- Season 1 (Vixen), the first season of Vixen; aired August 25, 2015 – September 29, 2015.
- Season 1 (Supergirl), the first season of Supergirl; aired October 26, 2015 – April 18, 2016.
- Season 1 (DC's Legends of Tomorrow), the first season of DC's Legends of Tomorrow; aired January 21, 2016 – May 19, 2016.
- Season 1 (Freedom Fighters: The Ray), the first season of Freedom Fighters: The Ray; aired December 8, 2017.
- Season 1 (Black Lightning), the first season of Black Lightning; aired January 16, 2018 – April 17, 2018.
- Season 1 (Batwoman), the first season of Batwoman; aired October 6, 2019 – May 17, 2020.
- Season 1 (Superman & Lois), the first season of Superman & Lois; aired February 23, 2021 – August 17, 2021.