Teen Titans is an American animated superhero television series created by Glen Murakami and developed by Murakami, David Slack and Sam Register. Based on DC Comics's superhero team Teen Titans, it was produced by Warner Bros. Animation, and DC Comics (for season 5). The show premiered on Cartoon Network on July 19, 2003; its first two seasons also aired on Kids' WB. Initially, only four seasons were planned, but the popularity of the series led to Cartoon Network ordering a fifth season. The final half-hour episode of the show, "Things Change", aired on January 16, 2006; it was later followed by a TV movie, Teen Titans: Trouble in Tokyo, that premiered on September 15 the same year, serving as the series finale. A 15-minute episode titled "The Lost Episode" was released as part of an online promotional campaign by Post Consumer Brands in January 2005.

Teen Titans became one of Cartoon Network's most popular series, renowned for its humor, storylines, and banter between the main characters. During its run, the series was nominated for three Annie Awards and one Motion Picture Sound Editors Award. Spin-off media included comics, DVD releases, video games, music albums, and collectible toys. In 2013, the show spawned a spin-off, titled Teen Titans Go!, which received a theatrical film that was released on July 27, 2018, titled Teen Titans Go! To the Movies. In 2019, a crossover film with Teen Titans Go! was released, titled Teen Titans Go! vs. Teen Titans. It features the first appearance of the original series characters after 13 years.

The series was first shown on Boomerang from February 2, 2009, replacing Voltron: Defender of the Universe until October 31, 2010. It returned to Boomerang's line-up on October 3, 2011, and left the schedule again on June 1, 2014.