Henry Winkler as Andy Schmidt

Kim Darby as Mary Crawford

Gene Saks as Sidney Seltzer

William Daniels as Mr. Crawford

Harold Gould as Hector Moses

Polly Holliday as Mrs. Crawford

Hervé Villechaize as Milton Miller

Bill Baldwin as Announcer in Des Moines

Anthony Battaglia as Little Andy

Ed Begley Jr. as Arnold - The King

Peter Brocco as Autograph Hound

Brandon Cruz as Sherman

Lucy Lee Flippin as Agatha Franklen

Charles Frank as Paul Harris

Salvador Guerrero III as Indian Joe

H.B. Haggerty as Captain Nemo

Dennis James as Self

Jean Le Bouvier as Wrestling Fanatic

Ralph Manza as Bellman

Ken Olfson as Mr. Arnold

Jack Scalici as Waiter

Will Seltzer as Eddie

Amzie Strickland as House Mother

Mary Woronov as Arlene

Gene LeBell as Reigning World Wrestling Champion (uncredited)

Roddy Piper as Leatherneck Joe Brady (uncredited)

Carl Reiner as Theater Director (uncredited)