 Jerry LewisPeter J. Ingersoll / Fred Dobbs | Peter J. Ingersoll / Fred Dobbs |
 Peter LawfordDr. Scott Carter | Dr. Scott Carter |
 Anne FrancisNancy Ingersoll | Nancy Ingersoll |
 Pedro Gonzalez GonzalezPerfecto | Perfecto |
 Jennifer EdwardsJennifer Ingersoll | Jennifer Ingersoll |
| JJimmy MillerJimmy Ingersoll | Jimmy Ingersoll |
 Eleanor AudleyMrs. Durham | Mrs. Durham |
 Henry CordenKenyon Hammercher | Kenyon Hammercher |
 Sylvia LewisKarlotta Hammercher | Karlotta Hammercher |
 Phillip PineHead Surgeon | Head Surgeon |
| FFelipe TurichForeign Mortician | Foreign Mortician |
 Kathleen FreemanMrs. Hardtack - Baby Sitter | Mrs. Hardtack - Baby Sitter |
 Scatman CrothersThe Corpse (uncredited) | The Corpse (uncredited) |
 Byron FoulgerFuneral Director (uncredited) | Funeral Director (uncredited) |
 Al BainBurial Spectator (uncredited) | Burial Spectator (uncredited) |
| AAnthony Larry PaulCredit Card Man (uncredited) | Credit Card Man (uncredited) |
| AArt LewisToothpick Man (uncredited) | Toothpick Man (uncredited) |
 Frankie DarroDelivery Man (uncredited) | Delivery Man (uncredited) |
| EElizabeth GermaineMiss Freitas (uncredited) | Miss Freitas (uncredited) |
 Norman LeavittDr. Everson (uncredited) | Dr. Everson (uncredited) |
| HHarlan WardeDistrict Attorney (uncredited) | District Attorney (uncredited) |
| MMargaret TeeleNurse Susan (uncredited) | Nurse Susan (uncredited) |
| TTed SmileArm Wrestler (uncredited) | Arm Wrestler (uncredited) |
 Alberto MorinPortuguese Passport Official (uncredited) | Portuguese Passport Official (uncredited) |
 John StacySurgeon (uncredited) | Surgeon (uncredited) |
 William O'ConnellHotel Clerk (uncredited) | Hotel Clerk (uncredited) |
| TTom AnfinsenBurial Spectator (uncredited) | Burial Spectator (uncredited) |
