Legion of Super Heroes is an American animated television series produced by Warner Bros. Animation, adapted from the DC Comics series of the same name. It debuted on September 23, 2006, and centers on a young Superman's adventures in the 31st century, fighting alongside the eponymous group of superheroes. The show was produced by one of its main character designers James Tucker, a co-producer of the Justice League Unlimited series, for the Kids' WB line-up on The CW network.

The series drew on the rich history of the Legion of Super-Heroes, taking inspiration from stories set during all time periods of the team's nearly 50-year history in comics. It also had a tie-in spin-off comic book series, Legion of Super-Heroes in the 31st Century, that lasted 20 issues.

The series was cancelled after its second season.