It was distributed by 20th Century Fox, and produced by Regency Enterprises and Bagdasarian Productions. The film is a sequel to the 2007 film Alvin and the Chipmunks and its 2009 sequel Alvin and the Chipmunks: The Squeakquel, and was released on December 16, 2011.
To be added
- Justin Long as Alvin Seville (Ross Bagdasarian, Jr. as Alvin's singing voice).
- Matthew Gray Gubler as Simon Seville (Steve Vining as Simon's singing voice).
- Jesse McCartney as Theodore Seville.
- Christina Applegate as Brittany (Janice Karman as Brittany's singing voice).
- Anna Faris as Jeanette (Janice Karman as Jeanette's singing voice).
- Amy Poehler as Eleanor (Janice Karman as Eleanor's singing voice).
- Jason Lee as David "Dave" Seville
- David Cross as Ian Hawke
- Jenny Slate as Zoe