 Natalie WoodPenelope | Penelope |
 Ian BannenJames B. Elcott | James B. Elcott |
 Dick ShawnDr. Gregory Mannix | Dr. Gregory Mannix |
 Peter FalkLt. Horatio Bixbee | Lt. Horatio Bixbee |
 Jonathan WintersProfessor Klobb | Professor Klobb |
 Lila KedrovaPrincess Sadaba | Princess Sadaba |
 Lou JacobiDucky | Ducky |
 Norma CraneMildred Halliday | Mildred Halliday |
 Arthur MaletMajor Higgins | Major Higgins |
| JJerome CowanBank Manager | Bank Manager |
 Arlene GolonkaHoneysuckle Rose | Honeysuckle Rose |
 Amzie StricklandMiss Serena | Miss Serena |
 Bill GunnSgt. Rothschild | Sgt. Rothschild |
 Carl BallantineBoom Boom | Boom Boom |
 Iggie WolfingtonStore Owner | Store Owner |
 Lewis CharlesMan Carrying Violin Case in Bank (uncredited) | Man Carrying Violin Case in Bank (uncredited) |
| RRon CharlesTruck Driver (uncredited) | Truck Driver (uncredited) |
 John DaheimBank Guard (uncredited) | Bank Guard (uncredited) |
 Edith EvansonNewsstand Proprietor (uncredited) | Newsstand Proprietor (uncredited) |
 Joey FayeSpectator (uncredited) | Spectator (uncredited) |
 Fritz FeldPenelope's Dance Partner (uncredited) | Penelope's Dance Partner (uncredited) |
| JJames GonzalezExecutive (uncredited) | Executive (uncredited) |
 Lloyd KinoToshi (uncredited) | Toshi (uncredited) |
 Philo McCulloughBanker (uncredited) | Banker (uncredited) |
 George N. NeiseMr. Halliday (uncredited) | Mr. Halliday (uncredited) |
 Monty O'GradyBank Customer (uncredited) | Bank Customer (uncredited) |
| RRobert PerryParty Goer (uncredited) | Party Goer (uncredited) |
 Noam PitlikBank Guard (uncredited) | Bank Guard (uncredited) |
| MMurray PollackParty Guest (uncredited) | Party Guest (uncredited) |
 Bill QuinnBank Executive (uncredited) | Bank Executive (uncredited) |
