Kurt Russell as Dexter Riley

Joe Flynn as Dean Higgins

Eve Arden as Harriet

Cesar Romero as A.J. Arno

Phil Silvers as Krinkle

Dick Van Patten as Harry

Harold Gould as Dietz

Michael McGreevey as Schuyler

Richard Bakalyan as Cookie

William Schallert as Prof. Quigley

Benson Fong as Ah Fong

James Gregory as Chief Blair

John Debney as John (Student)

Derrel Maury as Hector (Student)

David R. Ellis as David (Student)

Roy Roberts as Mr. Roberts

Fritz Feld as Uncle Frederick

Ronnie Schell as Referee

Raymond Bailey as Regent Burns

Dick Patterson as Mr. Secretary

Larry Gelman as Larry

Kathleen Freeman as Officer Hurley

Ned Wertimer as Mr. Parsons

Milton Frome as Mr. Lufkin

Laurie Main as Mr. Reedy

Mary Treen as Mercedes

Eddie Quillan as Mr. Willoughby

Burt Mustin as Regent Appleby

Arthur Space as Regent Shaw

Bill Zuckert as Policeman

Larry J. Blake as Pete

William Bakewell as Professor

Art Metrano as TV Color Man

Lennie Weinrib as State Coach

Francis De Sales as Regent (uncredited)

Harry Holcombe as Regent (uncredited)

John Holland as Regent (uncredited)

Gordon Jump as Krinkle Krunch Executive (uncredited)

Jack Perkins as School Security Guard (uncredited)

Cosmo Sardo as Crumply Crunch Executive (uncredited)

Jeffrey Sayre as Crumply Crunch Executive (uncredited)

Larry Franco as Larry (Student)

Jonathan Daly as T.V. Announcer

Lomax Study as Krinkle Krunch Executive (uncredited)

Roger Callard as Weightlifter Kawaski