 Cary GrantPeter Joshua | Peter Joshua |
 Audrey HepburnRegina Lampert | Regina Lampert |
 Walter MatthauHamilton Bartholemew | Hamilton Bartholemew |
 James CoburnTex Panthollow | Tex Panthollow |
 George KennedyHerman Scobie | Herman Scobie |
 Dominique MinotSylvie Gaudel | Sylvie Gaudel |
 Ned GlassLeopold Gideon | Leopold Gideon |
 Jacques MarinEdouard Grandpierre | Edouard Grandpierre |
 Paul BonifasMr. Felix | Mr. Felix |
| TThomas ChelimskyJean-Louis Gaudel | Jean-Louis Gaudel |
 Marc ArianSubway Passenger (uncredited) | Subway Passenger (uncredited) |
| CClaudine BergMaid (uncredited) | Maid (uncredited) |
 Marcel BernierTaxi Driver (uncredited) | Taxi Driver (uncredited) |
| AAlbert DaumergueMan in Stamp Market (uncredited) | Man in Stamp Market (uncredited) |
 Raoul DelfosseTaxi Driver (uncredited) | Taxi Driver (uncredited) |
 Stanley DonenMan in Elevator (voice) (uncredited) | Man in Elevator (voice) (uncredited) |
| JJean GoldWriter On Cafe Terrace (uncredited) | Writer On Cafe Terrace (uncredited) |
 Chantal Goya(uncredited) | (uncredited) |
 Clément HarariGerman Tourist (uncredited) | German Tourist (uncredited) |
 Monte LandisMaster of Ceremonies at Club (uncredited) | Master of Ceremonies at Club (uncredited) |
 Bernard MussonHotel Receptionnist (uncredited) | Hotel Receptionnist (uncredited) |
 Antonio PassaliaItalian Representative at URESCO (uncredited) | Italian Representative at URESCO (uncredited) |
 Jacques PréboistIce Cream Salesman (uncredited) | Ice Cream Salesman (uncredited) |
 Peter StoneMan in Elevator / Marine (voice) (uncredited) | Man in Elevator / Marine (voice) (uncredited) |
 Michel ThomassEmbassy Driver (uncredited) | Embassy Driver (uncredited) |
 Roger TrappMortuary Employee (uncredited) | Mortuary Employee (uncredited) |
 Louis ViretHallmark Employee On Subway (uncredited) | Hallmark Employee On Subway (uncredited) |
