Alvin:......................................................... Ross Bagdasarian
Theodore:................................................. Ross Bagdasarian
Simon:....................................................... Ross Bagdasarian
David Seville:........................................... Ross Bagdasarian
Sinbad:...................................................... Tim Matheson
Salty the Parrot:....................................... Mel Blanc
Sam Valiant:.............................................. Ross Bagdasarian
Brittany
Eleanor
Jeanette
Mrs. Miller