Dexter Riley
Kurt Russell
Dean Higgins
Joe Flynn
Harriet Crumply
Eve Arden
A.J. Arno
Cesar Romero
Krinkle
Phil Silvers*
Kirwood Krinkle
Phil Silvers
V.P. Harry Crumply
Dick Van Patten
Regent Dietz
Harold Gould
Richard Schuyler
Michael McGreevey
Prof. Quigley
William Schallert
Cookie
Richard Bakalyan
Ah Fong
Benson Fong
Chief Blair
James Gregory
Mr. Secretary
Dick Patterson
John (Student)
John Debney
Gilbert (Student)
Don Carter
Hector (Student)
Derrel Maury
David (Student)
David R. Ellis
Porky (Student)
Paul Linke
Slither (Student)
Jack David Walker
Mr. Roberts
Roy Roberts
Uncle Frederick
Fritz Feld
Referee
Ronnie Schell
Pat (Student)
Pat Fitzpatrick
Regent Burns
Raymond Bailey
Larry
Larry Gelman
Mr. Roscoe
John Myhers
Officer Hurley
Kathleen Freeman
Mr. Parsons
Ned Wertimer
Irwin
Irwin Charone
Mr. Lutkin
Milton Frome
Roger
Roger Price
Mr. Reedy
Laurie Main
Mercedes
Mary Treen
Mr. Becker
Iggie Wolfington
Mr. Willoughby
Eddie Quillan
Regent Appleby
Burt Mustin
Regent Shaw
Arthur Space
Mr. Reedy
Laurie Main
Policeman
Bill Zuckert
Pete
Larry J. Blake
Professor
William Bakewell
Mr. Rogers
Jeff De Benning
TV Color Man
Art Metrano
Mr. Webster
Byron Webster
State Coach
Lennie Weinrib
Regent (uncredited)
Francis de Sales
Regent (uncredited)
Harry Holcombe
Regent (uncredited)
John Holland
Krinkle Krunch Executive (uncredited)
Gordon Jump
School Security Guard (uncredited)
Jack Perkins
Crumply Crunch Executive (uncredited)
Cosmo Sardo
Crumply Crunch Executive (uncredited)
Jeffrey Sayre
Drummer
Danny Wells
Larry (Student)
Larry J. Franco
Edward
James Brodhead