 Henry SilvaJohnny Cool / Salvatore Giordano | Johnny Cool / Salvatore Giordano |
 Elizabeth MontgomeryDarien 'Dare' Guiness | Darien 'Dare' Guiness |
 Richard AndersonCorrespondent | Correspondent |
 Jim BackusLouis Murphy | Louis Murphy |
 Joey BishopHolmes, Used Car Salesman | Holmes, Used Car Salesman |
 Brad DexterLennart Crandall | Lennart Crandall |
 Wanda HendrixMiss Connolly | Miss Connolly |
| HHank HenryLarry, Bus Driver | Larry, Bus Driver |
 Marc LawrenceJohnny Colini | Johnny Colini |
 John McGiverOscar B. 'Oby' Hinds | Oscar B. 'Oby' Hinds |
 Gregory MortonJerry March | Jerry March |
 Mort SahlBen Morrow | Ben Morrow |
 Telly SavalasVincenzo 'Vince' Santangelo | Vincenzo 'Vince' Santangelo |
 Joan StaleySuzy Blakely | Suzy Blakely |
 Sammy Davis Jr.Educated | Educated |
 Elisha Cook Jr.Underworld Leader | Underworld Leader |
 John DierkesCripple | Cripple |
 Frank AlbertsonBill Blakely | Bill Blakely |
 Katharine BardMrs. Crandall | Mrs. Crandall |
| SSteve PeckKromlein | Kromlein |
 Joe TurkelHoodlum | Hoodlum |
 Elvia AllmanBeauty Salon Receptionist | Beauty Salon Receptionist |
 Robert ArmstrongUnderworld Leader | Underworld Leader |
 George CisarGeorge, a Bartender | George, a Bartender |
 Mary ScottMargaret Huntington | Margaret Huntington |
 Douglas HendersonFBI Man | FBI Man |
 Douglass DumbrilleCorrupt City Council Member | Corrupt City Council Member |
 Joseph CalleiaTourist | Tourist |
 George N. NeiseAdrian Guinness | Adrian Guinness |
| MMaria AndreWoman (uncredited) | Woman (uncredited) |
