Alvin and the Chipmunks is a live-action film series, based on the characters of the same name created by Ross Bagdasarian, Sr.. The films are produced by Janice Karman and Ross Bagdasarian and released by 20th Century Fox. Live-action roles include Jason Lee (all four films) and David Cross (the first three films); voice roles for the CGI chipmunk characters are provided by Justin Long, Matthew Gray Gubler, and Jesse McCartney in all four films, Christina Applegate and Anna Faris in the three sequels, Amy Poehler in the second and third films, and Kaley Cuoco in the fourth film.

Alvin and the Chipmunks, originally David Seville and the Chipmunks or simply The Chipmunks, is an American animated music group created by Ross Bagdasarian, Sr., for a novelty record in 1958. The group consists of three singing animated anthropomorphic chipmunks: Alvin, the mischievous troublemaker, who quickly became the star of the group; Simon, the tall, bespectacled intellectual; and Theodore, the chubby, impressionable one. The trio is managed by their human adoptive father, David (Dave) Seville. In reality, "David Seville" was Bagdasarian's stage name, and the Chipmunks themselves are named after the executives of their original record label. The characters became a success, and the singing Chipmunks and their manager were given life in several animated cartoon productions, using redrawn, anthropomorphic chipmunks, and eventually films.