Stitch, also known as Experiment 626, is a fictional character from Disney's Lilo & Stitch franchise. A genetically engineered, extraterrestrial life-form resembling a blue koala, he is the more prominent of the franchise's two title protagonists, the other being his human adopter and best friend Lilo Pelekai.

Lilo & Stitch, also marketed as Disney Stitch or simply Stitch, is an American media franchise created by Disney that commenced in 2002 with the release of the animated feature film of the same name written and directed by Chris Sanders and Dean DeBlois. The combined critical and commercial success of the original film, which was a rarity for the company's feature animation studio during the studio's post-Renaissance downturn in the early 2000s, led to three direct-to-video and television sequel feature films, a short film, three animated television series, several video games, theme park attractions, comics, literature, and various merchandise.