|Alvin & the Chipmunks:New friends,old friends|
- Carly Schroeder as Bella Consmigter
- Justin Long as Alvin Seville
- Matthew Gray Gubler as Simon Seville
- Jesse McCartney as Theodore Seville
- Ross Bagdasarian as Dave Seville
- Christina Applegate as Brittany Miller
- Anna Faris as Jeanette Miller
- Amy Poehler as Eleanor Miller
- Gabrielle Christian as Pam Averin
- Lawrence Talbot is only menaced in this film, Principal Milliken admits that she became the principal of the school again because Mr. Talbot had to move to Pennsylvania due to low budget bills.
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