Dudley Moore
Patch
John Lithgow
B.Z.
David Huddleston
Santa Claus
Burgess Meredith
Ancient Elf
Judy Cornwell
Anya Claus
Jeffrey Kramer
Towzer
Carrie Kei Heim
Cornelia
John Barrard
Dooley
Anthony O'Donnell
Puffy
Melvyn Hayes
Goober
Don Estelle
Groot
Tim Stern
Boog
Christopher Ryan
Vout
Peter O'Farrell
Honka
Dickie Arnold
Goobler
Aimée Delamain
Storyteller
Dorothea Phillips
Miss Tucker
John Hallam
Grizzard, Chauffeur
Judith Morse
Miss Abruzzi
Jerry Harte
Senate Chairman
Paul Aspland
Reporter
Sally Cranfield
Reporter
Michael Drew
Reporter
Walter Goodman
Street Corner Santa
John Cassady
Wino
Ronald Fernee
Policeman
Michael A. Ross
Policeman
Shannon Spruill
Bratty Kid at Ballet Class
Morgan Deare
BZ's Lawyer
Caroline John
Woman
Jill Goldston
Photographer In Court (uncredited)