 Jack LemmonProfessor Fate | Professor Fate |
 Tony CurtisThe Great Leslie | The Great Leslie |
 Natalie WoodMaggie Dubois | Maggie Dubois |
 Peter FalkMax | Max |
 Keenan WynnHezekiah | Hezekiah |
 Arthur O'ConnellHenry Goodbody | Henry Goodbody |
 Vivian VanceHester Goodbody | Hester Goodbody |
 Dorothy ProvineLily Olay | Lily Olay |
 Larry StorchTexas Jack | Texas Jack |
 Ross MartinRolfe Von Stuppe | Rolfe Von Stuppe |
 George MacreadyGeneral Kuhster | General Kuhster |
 Marvin KaplanFrisbee | Frisbee |
 Hal SmithMayor of Boracho | Mayor of Boracho |
 Denver PyleSheriff | Sheriff |
 William BryantBaron's Guard | Baron's Guard |
| KKen WalesBaron's Guard | Baron's Guard |
 Hal NeedhamSaloon Brawler (uncredited) | Saloon Brawler (uncredited) |
 Raoul RetzerMayor-Domo (uncredited) | Mayor-Domo (uncredited) |
| LLeslie SketchleyExecutive Board Member (uncredited) | Executive Board Member (uncredited) |
 Kenner G. KempTownsman (uncredited) | Townsman (uncredited) |
| BBert StevensTownsman (uncredited) | Townsman (uncredited) |
 Arthur ToveyReporter (uncredited) | Reporter (uncredited) |
 Chuck HaywardSoldier (uncredited) | Soldier (uncredited) |
| GGeorge BoyceExecutive Board Member (uncredited) | Executive Board Member (uncredited) |
| JJerry SchumacherAuto Worker (uncredited) | Auto Worker (uncredited) |
 Charles FredericksMaster of Ceremonies (uncredited) | Master of Ceremonies (uncredited) |
 Max WagnerBarfly (uncredited) | Barfly (uncredited) |
 Paul BryarPoliceman (uncredited) | Policeman (uncredited) |
| JJack GordonObserver at Start (uncredited) | Observer at Start (uncredited) |
 Sol GorssSaloon Brawler (uncredited) | Saloon Brawler (uncredited) |
