Kurt Russell
Dexter Riley
Joe Flynn
Dean Higgins
Eve Arden
Harriet
Cesar Romero
A.J. Arno
Phil Silvers
Krinkle
Dick Van Patten
Harry
Harold Gould
Dietz
Michael McGreevey
Schuyler
Richard Bakalyan
Cookie
William Schallert
Prof. Quigley
Benson Fong
Ah Fong
James Gregory
Chief Blair
John Debney
John (Student)
Derrel Maury
Hector (Student)
David R. Ellis
David (Student)
Roy Roberts
Mr. Roberts
Fritz Feld
Uncle Frederick
Ronnie Schell
Referee
Raymond Bailey
Regent Burns
Dick Patterson
Mr. Secretary
Larry Gelman
Larry
Kathleen Freeman
Officer Hurley
Ned Wertimer
Mr. Parsons
Milton Frome
Mr. Lufkin
Laurie Main
Mr. Reedy
Mary Treen
Mercedes
Eddie Quillan
Mr. Willoughby
Burt Mustin
Regent Appleby
Arthur Space
Regent Shaw
Bill Zuckert
Policeman
Larry J. Blake
Pete
William Bakewell
Professor
Art Metrano
TV Color Man
Lennie Weinrib
State Coach
Francis De Sales
Regent (uncredited)
Harry Holcombe
Regent (uncredited)
John Holland
Regent (uncredited)
Gordon Jump
Krinkle Krunch Executive (uncredited)
Jack Perkins
School Security Guard (uncredited)
Cosmo Sardo
Crumply Crunch Executive (uncredited)
Jeffrey Sayre
Crumply Crunch Executive (uncredited)
Larry Franco
Larry (Student)
Jonathan Daly
T.V. Announcer
Lomax Study
Krinkle Krunch Executive (uncredited)
Roger Callard
Weightlifter Kawaski