Roger Thornhill
Eve Kendall
Phillip Vandamm
Clara Thornhill
The Professor
Mrs. Townsend
Lester Townsend
Leonard
Valerian
Victor Larrabee
Licht
Auctioneer
Dr. Cross
Sergeant Flamm
Captain Junket
Charley
Lieutenant Harding (uncredited)
Auction Guest (uncredited)
Farmer (uncredited)
Woman (uncredited)
Worker (uncredited)
Porter on Twentieth Century Ltd. (uncredited)
Man at Prairie Crossing (uncredited)
State Police Detective (uncredited)
Courtroom Spectator (uncredited)
Woman at United Nations Building (uncredited)
Taxi Driver #2 (uncredited)
Man at Auction Guest (uncredited)
Sergeant Emile Klinger (uncredited)
Bit Part (uncredited)
Man with Camera (uncredited)
Man at United Nations Building (uncredited)
Tall Man in Crowd (uncredited)
Shaving Man (uncredited)
Auction Attendant (uncredited)
Cropduster Pilot (uncredited)
Police Officer on Horse (uncredited)
U.S. Intelligence Agency Official (uncredited)
Taxi Driver #1 (uncredited)
Hospital Patient (uncredited)
Train Steward (uncredited)
Police Lieutenant (uncredited)
Woman on Sidewalk (uncredited)
Eddie (uncredited)
Woman on Train (uncredited)
Bald Bidder (uncredited)
Hotel Lounge Patron (uncredited)
Friendly Passenger (uncredited)
Second United Nations Receptionist (uncredited)
Lieutenant Hagerman (uncredited)
Ticket Seller (uncredited)
Silent State Police Detective (uncredited)
Train Passenger (uncredited)
Man Who Misses Bus (uncredited)
Security Guard at Auction (uncredited)
Waiter (uncredited)
Minor Role (uncredited)
Man Leaving Office Building (uncredited)
Mrs. Finlay (uncredited)
Maggie (uncredited)
Man in Phone Booth (uncredited)
Judge Anson Flynn (uncredited)
Taxi Driver (uncredited)
Anna (uncredited)
Police Officer in Chicago (uncredited)
Plaza Valet (uncredited)
Attendant (uncredited)
Hotel Clerk (uncredited)
Conductor on Twentieth Century, Ltd. (uncredited)
Man in Plaza Bar (uncredited)
Elsie (uncredited)
Bellhop (uncredited)
Bystander (uncredited)
Hotel Lounge Patron / Man at Mt. Rushmore Cafeteria (uncredited)
Victor (uncredited)
Larry Wade (uncredited)
Cab Driver (uncredited)
First United Nations Receptionist (uncredited)
Policeman at Grand Central Station (uncredited)
Assistant Auctioneer (uncredited)
Bidder (uncredited)
Stockbroker (uncredited)
Assistant Conductor (uncredited)
Man Opening Door for Thornhill (uncredited)
Ranger (uncredited)
Herman Weitner (uncredited)
Patrolman Waggoner (uncredited)
Woman at Auction (uncredited)
Photographer at United Nations (uncredited)
Fanning Nelson (uncredited)