Xiaolin Showdown is an American animated television series that aired on Kids' WB and was created by Christy Hui. Set in a world where martial arts battles and Eastern magic are commonplace, the series follows Omi, Raimundo, Kimiko, and Clay, four young Xiaolin warriors in training who, alongside their dragon companion Dojo, battle the Heylin forces of evil, especially series antagonists Jack Spicer, Wuya, and Chase Young. The Xiaolin warriors set to accomplish this by protecting Shen Gong Wu, a set of ancient artifacts that have great magical powers, from villains who could use them to conquer the world. Typical episodes revolve around a specific Shen Gong Wu and the resulting race on both sides to find it. Episodes often climax with one good and one evil character challenging one another to a magical duel called a Xiaolin Showdown for possession of the artifact.

Originally premiering on the Kids' WB block of programming on The WB on November 1, 2003, the series ran for 3 seasons with 52 episodes before its conclusion on May 13, 2006. The series aired in both reruns and second runs on Cartoon Network from 2006 to 2007 and on MeTV Toons starting in 2024. Xiaolin Showdown was a ratings hit for Kids' WB and led to the licensing of spin-off media including DVD releases, a trading card game, and a video game. The series won a Daytime Emmy Award in 2005 and was nominated for three additional Daytime Emmy Awards, one Annie Award, and one Golden Reel Award.

A follow-up series, Xiaolin Chronicles, previewed on August 26, 2013, on Disney XD and began its long-term run on September 14 the same year. The show aired for twenty episodes from August 26, 2013, to March 6, 2014, on Disney XD, leaving the last six episodes unaired in the United States until July 1, 2015, when Chronicles was made available to watch on Netflix.