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