Dudley Moore as Patch

John Lithgow as B.Z.

David Huddleston as Santa Claus

Burgess Meredith as Ancient Elf

Judy Cornwell as Anya Claus

Jeffrey Kramer as Towzer

Christian Fitzpatrick as Joe

Carrie Kei Heim as Cornelia

John Barrard as Dooley

Anthony O'Donnell as Puffy

Melvyn Hayes as Goober

Don Estelle as Groot

Tim Stern as Boog

Christopher Ryan as Vout

Peter O'Farrell as Honka

Dickie Arnold as Goobler

Aimée Delamain as Storyteller

Dorothea Phillips as Miss Tucker

John Hallam as Grizzard, Chauffeur

Judith Morse as Miss Abruzzi

Jerry Harte as Senate Chairman

Paul Aspland as Reporter

Sally Cranfield as Reporter

Michael Drew as Reporter

Walter Goodman as Street Corner Santa

John Cassady as Wino

Ronald Fernee as Policeman

Michael A. Ross as Policeman

Morgan Deare as BZ's Lawyer (uncredited)

Roy Evans as Village Leader (uncredited)

Caroline John as Village Woman (uncredited)

Jill Goldston as Photographer In Court (uncredited)

Barrie Holland as Reporter (uncredited)

Stuart Milligan as Senator (uncredited)

Nicole Appleton as Little Girl in Ballet Class (uncredited)

Shannon Spruill as Bratty Kid in Ballet Class (uncredited)