- Jerry Lewis
- Gerald Clamson / Syd Valentine
- Harold J. Stone
- Thor
- Susan Bay Nimoy
- Suzie Cartwright
- Buddy Lester
- Studs
- Del Moore
- Mr. Hodges
- Paul Lambert
- Moxie
- Jeannine Riley
- Bambi Berman
- Leonard Stone
- Fong
- Charlie Callas
- Rex
- Frank De Vol
- Bogart
- Vern Rowe
- Gunner
- David Lipp
- Lizard
- Vincent Van Lynn
- Fancher
- Mike Mahoney
- Detective #1
- Walter Kray
- Detective #2
- John Nolan
- F.B.I. Agent
- Eddie Ryder
- Specs
- Murray Alper
- Ed - Motorcycle Officer
- Vince Barnett
- Man at Telephone Booth
- Barbara Burgess
- Girl on Beach
- Charo
- Mexican Maid
- Corinne Cole
- Stewardess
- Douglas Deane
- Bellboy
- Harry Fleer
- Male Nurse
- Med Flory
- Male Nurse
- Percy Helton
- Sanitation Man
- James Jeter
- Police Lieutenant
- Ray Kellogg
- Police Sergeant
- Don Kennedy
- Marine Sergeant
- Robert Kino
- Asian Man
- Roland La Starza
- Jack - Motorcycle Officer
- Florence Lake
- Assaulted Lady
- Scott Lewis
- Guy on Beach
- John Macchia
- Lifeguard
- Howard Morris
- Cameo Role
- William O'Connell
- Psychiatrist
- Pete Peterson
- Water Skiier
- Iris Rainer
- Girl on Beach
- Tony Regan
- Hotel Guest / Tourist (uncredited)
- Rob Reiner
- Guy on Beach
- Michael Ross
- Bald Man
- Harland Sanders
- Colonel Sanders
- George Takei
- Diamond Jeweler
- William Wellman Jr.
- Harold - Bellboy / Car Hop (uncredited)
- Mike Williams
- Man on the Beach
