Kurt Russell as Dexter Riley

Cesar Romero as A.J. Arno

Joe Flynn as Dean Higgins

William Schallert as Professor Quigley

Alan Hewitt as Dean Collingsgood

Richard Bakalyan as Chillie Walsh

Debbie Paine as Annie

Frank Welker as Henry

Frank Webb as Pete

Michael McGreevey as Schuyler

Jon Provost as Bradley

Bing Russell as Angelo

Pat Harrington, Jr. as Moderator

Fritz Feld as Sigmund Van Dyke

Kenner G. Kemp as Extra

Leon Alton as Collingsgood Associate (uncredited)

Ed Begley Jr. as Student (uncredited)

Gail Bonney as Winifred - Dean's Secretary (uncredited)

David Canary as Mr. Walski (uncredited)

John Cliff as Police Turnkey (uncredited)

Howard Culver as Moderator (uncredited)

George DeNormand as College of Knowledge Attendee (uncredited)

William Fawcett as Dietes - College Regent (uncredited)

Robert Foulk as Police Desk Sergeant (uncredited)

Duane Grey as Police Detective at Raid (uncredited)

Myron Healey as Police Detective (uncredited)

George Hoagland as Crew Member (uncredited)

Jonathan Hole as Scientist (uncredited)

Michael Jeffers as Racetrack Patron (uncredited)

Byron Morrow as Leonard - College Regent (uncredited)

George N. Neise as College of Knowledge Sponsor (uncredited)

Joe Phillips as Police Officer (uncredited)

Judson Pratt as Detective in Gambling Raid (uncredited)

Leoda Richards as Casino Patron (uncredited)

Cosmo Sardo as Croupier (uncredited)

Jeffrey Sayre as Man Seated in Control Room (uncredited)

Maida Severn as Party Guest (uncredited)

Olan Soule as TV Reporter (uncredited)

Gregory Morton as Dr. Rufus Schmidt (uncredited)

Hal Taggart as Waiter at Track (uncredited)

Peter Renaday as Lt. Hannah

Heather Menzies as Priscilla's Lady in Waiting (uncredited)

Arthur Tovey as Pedestrian (uncredited)

Mark Russell as Crew Member (uncredited)