On screen
Cast
7 credited performers
Ross Bagdasarian Jr.
Alvin, Simon, David Seville, Grandpa Seville (voice)
Janice Karman
Theodore, Grandma Seville (voice)
Artwork unavailable
Thomas H. Watkins
Mr. Armstrong (voice)
June Foray
Mrs. Claus, Mrs. Waterford (voice)
Frank Welker
Santa Claus, Doctor (voice)
Artwork unavailable
Charles Berendt
Clyde Crashcup (voice)
R.J. Williams
Tommy Waterford (voice)