 Cary GrantRoger Thornhill | Roger Thornhill |
 Eva Marie SaintEve Kendall | Eve Kendall |
 James MasonPhillip Vandamm | Phillip Vandamm |
 Jessie Royce LandisClara Thornhill | Clara Thornhill |
 Leo G. CarrollProfessor | Professor |
 Josephine HutchinsonMrs. Townsend | Mrs. Townsend |
 Philip OberLester Townsend | Lester Townsend |
 Martin LandauLeonard | Leonard |
 Adam WilliamsValerian | Valerian |
 Edward PlattVictor Larrabee | Victor Larrabee |
 Robert EllensteinLicht | Licht |
 Les TremayneAuctioneer | Auctioneer |
 Philip CoolidgeDr. Cross | Dr. Cross |
 Patrick McVeySergeant Flamm | Sergeant Flamm |
 Edward BinnsCaptain Junket | Captain Junket |
 Ken LynchCharley | Charley |
| NNora MarloweAnna, the Menacing Housekeeper (uncredited) | Anna, the Menacing Housekeeper (uncredited) |
 Doreen LangMaggie - Thornhill's Secretary (uncredited) | Maggie - Thornhill's Secretary (uncredited) |
 John BeradinoSergeant Emile Klinger (uncredited) | Sergeant Emile Klinger (uncredited) |
 Ned GlassTicket Seller (uncredited) | Ticket Seller (uncredited) |
 Tol AveryState Police Detective (uncredited) | State Police Detective (uncredited) |
 Malcolm AtterburyMan at Prairie Crossing (uncredited) | Man at Prairie Crossing (uncredited) |
 Maudie PrickettHotel Maid Elsie (uncredited) | Hotel Maid Elsie (uncredited) |
 Bess FlowersPlaza Hotel Lounge Patron (uncredited) | Plaza Hotel Lounge Patron (uncredited) |
 Stanley AdamsLieutenant Harding (uncredited) | Lieutenant Harding (uncredited) |
| AAndy AlbinFarmer (uncredited) | Farmer (uncredited) |
 Ernest AndersonPorter on Twentieth Century Ltd. (uncredited) | Porter on Twentieth Century Ltd. (uncredited) |
 Frank WilcoxHerman Weltner (uncredited) | Herman Weltner (uncredited) |
| BBrandon BeachMan at Auction (uncredited) | Man at Auction (uncredited) |
 Steve CarruthersMan at Auction (uncredited) | Man at Auction (uncredited) |
