 Farley GrangerGuy Haines | Guy Haines |
 Ruth RomanAnne Morton | Anne Morton |
 Robert WalkerBruno Antony | Bruno Antony |
 Leo G. CarrollSenator Morton | Senator Morton |
 Patricia HitchcockBarbara Morton | Barbara Morton |
 Kasey RogersMiriam Haines | Miriam Haines |
 Marion LorneMrs. Antony | Mrs. Antony |
 Jonathan HaleMr. Antony | Mr. Antony |
 Howard St. JohnCaptain Turley | Captain Turley |
 John BrownProf. Collins | Prof. Collins |
 Norma VardenMrs. Cunningham | Mrs. Cunningham |
 Robert GistLeslie Hennessey | Leslie Hennessey |
 Brooks BenedictTennis Umpire (uncredited) | Tennis Umpire (uncredited) |
 John DoucetteDetective Hammond (uncredited) | Detective Hammond (uncredited) |
 Harry HinesMan Under Merry-Go-Round (uncredited) | Man Under Merry-Go-Round (uncredited) |
 Alfred HitchcockMan Boarding Train Carrying Double Bass (uncredited) | Man Boarding Train Carrying Double Bass (uncredited) |
| PPaul McGuireTrain Passenger (uncredited) | Train Passenger (uncredited) |
| OOliver CrossParty Guest (uncredited) | Party Guest (uncredited) |
| TTom FerrandiniLinesman (uncredited) | Linesman (uncredited) |
| SStuart HallTennis Match Spectator (uncredited) | Tennis Match Spectator (uncredited) |
| JJoel AllenPoliceman (uncredited) | Policeman (uncredited) |
 Murray AlperBoatman (uncredited) | Boatman (uncredited) |
| MMonya AndreDowager (uncredited) | Dowager (uncredited) |
| BBenjie BancroftPolice Officer (uncredited) | Police Officer (uncredited) |
| HHarry BaumTennis Match Spectator (uncredited) | Tennis Match Spectator (uncredited) |
 Al BridgeTennis Judge (uncredited) | Tennis Judge (uncredited) |
 Joe BrooksCarnival Patron (uncredited) | Carnival Patron (uncredited) |
| JJohn ButlerBlind Man (uncredited) | Blind Man (uncredited) |
 Leonard CareyAnthony's Butler (uncredited) | Anthony's Butler (uncredited) |
| EEdward ClarkMiriam's Boss (uncredited) | Miriam's Boss (uncredited) |
