William Powell
Lt. William 'Bill' Gordon / Anson Meridan
Rosalind Russell
Joel Carter
Binnie Barnes
Olivia Karloff
Lionel Atwill
Maj. William Brennan
Cesar Romero
Capt. Nicholas 'Nikki' Nieterstein
Samuel S. Hinds
John Carter, Assistant Secretary of War
Henry Stephenson
Russian Ambassador Gregory
Frank Reicher
Dr. R.A. Jackson
Charley Grapewin
Prof. Martin
Leonard Mudie
Roberts
Howard Hickman
G-Man
Charles Trowbridge
Secretary of War Baker
Murray Kinnell
de Segroff
Margaret Dumont
Mrs. Hendricks (uncredited)
Mary Forbes
Lady Cavendish (uncredited)
Tom Dugan
Agent Patrick O'Reilly (uncredited)
Bernadene Hayes
Bobbie Burns (uncredited)
Winter Hall
Chaplain (uncredited)
Hedwiga Reicher
De Segroff's Associate (uncredited)
Milburn Stone
Carter's Aide (uncredited)
Theodore von Eltz
Desk Clerk Assistant (uncredited)
Sid Silvers
Recruiter (uncredited)
Sidney Bracey
Jackson's Assistant (uncredited)
Edgar Dearing
1st Military Policeman (uncredited)
James Flavin
2st Military Policeman (uncredited)
Hans Fuerberg
German Torpedo Man (uncredited)
Sterling Holloway
Taxi Driver (uncredited)
William V. Mong
Hotel Desk Clerk (uncredited)
Mickey Rooney
Country Boy (uncredited)
Melville Cooper
Doorman (uncredited)
Rudolph Anders
Radio Operator (uncredited)
Sam Savitsky
Colonel Petroff (uncredited)
Morgan Wallace
Gardner (uncredited)
Bert Moorhouse
2nd Lieutenant (uncredited)
Frank Lackteen
Customs Officer in Mexico (uncredited)
Belle Mitchell
Mexican (uncredited)
Sam Ash
Mexican (uncredited)
Lynton Brent
Decoder (uncredited)
Cyril Ring
Orderly (uncredited)
Rollo Dix
Orderly (uncredited)
Michael Vallon
Orderly (uncredited)
Monte Vandergrift
Sailor (uncredited)
Larry Steers
Partitioner (uncredited)
William Newell
Carter's Receptionist (uncredited)
Gino Corrado
Code Room Clerk (uncredited)
Johnny Arthur
Code Room Clerk (uncredited)
Edward Earle
Man in Code Room (uncredited)
Harry C. Bradley
Cashier (uncredited)
David Burns
German-Speaking Bellhop (uncredited)
Max Barwyn
Boris Stronskoff - Russian Singer (uncredited)
Charles Coleman
Café Doorman (uncredited)
Frank O'Connor
Officer (uncredited)
Bob Perry
G-Man (uncredited)
Leonid Snegoff
Kaieneff (uncredited)
Guy Usher
Ship's Captain (uncredited)
Henry Mowbray
Diplomat (uncredited)
Lee Kohlmar
Tailor (uncredited)
James P. Burtis
Private (uncredited)
Al Bridge
Sergeant (uncredited)
Arno Frey
Army Officer (uncredited)
Lowden Adams
Butler (uncredited)
Sherry Hall
Pvt. Dean (uncredited)
Eileen O'Malley
Red Cross Nurse (uncredited)
Eric Wilton
Kesterman (uncredited)
Earl Eby
G-Man (uncredited)
John Harmon
Telegrapher (uncredited)
Harry 'Zoup' Welsh
Barber (uncredited)
Jack Hatfield
Drug Store Clerk (uncredited)
