 Doris DayJennifer Nelson | Jennifer Nelson |
 Rod TaylorBruce Templeton | Bruce Templeton |
 Arthur GodfreyAxel Nordstrom | Axel Nordstrom |
 John McGiverRalph Goodwin | Ralph Goodwin |
 Paul LyndeHomer Cripps | Homer Cripps |
 Edward AndrewsGen. Wallace Bleecker | Gen. Wallace Bleecker |
 Eric FlemingEdgar Hill | Edgar Hill |
| DDom DeLuiseJulius Pritter | Julius Pritter |
 Dick MartinZack Molloy | Zack Molloy |
 Elisabeth FraserNina Bailey | Nina Bailey |
 Alice PearceMabel Fenimore | Mabel Fenimore |
 George TobiasNorman Fenimore | Norman Fenimore |
 Ellen CorbyAnna Miller | Anna Miller |
| DDee J. ThompsonDonna | Donna |
 Robert VaughnNapoleon Solo (uncredited) | Napoleon Solo (uncredited) |
 Regina CarrolMinor Role (uncredited) | Minor Role (uncredited) |
 Theo MarcuseGregor | Gregor |
| CCarolyn WilliamsonParty girl | Party girl |
| RRachel RomenReporter (uncredited) | Reporter (uncredited) |
 George CarlinUnknown (uncredited) | Unknown (uncredited) |
 George CisarFat Man (uncredited) | Fat Man (uncredited) |
 John DennisPoliceman (uncredited) | Policeman (uncredited) |
 Florence HalopLady on Telephone (uncredited) | Lady on Telephone (uncredited) |
 Frank ParkerEngineer (uncredited) | Engineer (uncredited) |
 Christopher RiordanParty Guest / Computer Plant Worker (uncredited) | Party Guest / Computer Plant Worker (uncredited) |
| TTom AnfinsenParty Guest (uncredited) | Party Guest (uncredited) |
| SSpencer ChanChef (uncredited) | Chef (uncredited) |
| GGeorge FordParty Guest (uncredited) | Party Guest (uncredited) |
| JJames GonzalezParty Guest (uncredited) | Party Guest (uncredited) |
| Theo MarcuseGregor - Spy with Cigar (uncredited) | Gregor - Spy with Cigar (uncredited) |
