Halo Legends (ヘーローレジェンズ Hērō rejenzu) is a 2010 German-American-Japanese adult animated military science fiction anthology film produced by 343 Industries. The anime compiles seven animated short films, detailing the backstory of the Halo universe, in addition to providing side stories that expand the universe and tie into the film series. Following the same pattern that other films such as The Animatrix and Batman: Gotham Knight used, the animated movies were created by six Japanese anime production houses: Bee Train, Bones, Casio Entertainment, Production I.G., Studio 4°C, and Toei Animation. Shinji Aramaki, creator and director of Appleseed and Appleseed Ex Machina, serves as the project's creative advisor. Warner Bros. released Legends on DVD and Blu-ray Disc on February 16, 2010.

The idea for an anime compilation existed for years before there was momentum for the project. 343 creative director Frank O'Connor produced story outlines or finished scripts that the production houses animated in a variety of styles.