William Powell as Nick Charles

Myrna Loy as Nora Charles

Maureen O'Sullivan as Dorothy Wynant

Nat Pendleton as Inspector John Guild

Minna Gombell as Mimi Wynant

Henry Wadsworth as Tommy

Porter Hall as Herbert MacCaulay

William Henry as Gilbert Wynant

Edward Ellis as Clyde Wynant

Edward Brophy as Joe Morelli

Cyril Thornton as Tanner

Cesar Romero as Chris Jorgenson

Harold Huber as Arthur Nunheim

Natalie Moorhead as Julia Wolf

Will Aubrey as Minor Role (uncredited)

William Augustin as Wynant's Butler (uncredited)

Polly Bailey as Janitress (uncredited)

Arthur Belasco as Detective (uncredited)

Brooks Benedict as Night Club Patron (uncredited)

Tui Bow as Stenographer (uncredited)

Raymond Brown as Police Dr. Walton (uncredited)

Ruth Channing as Mrs. Jorgenson (uncredited)

Jack Cheatham as Detective (uncredited)

Clay Clement as Quinn (uncredited)

Dorothy Compton as Maid at Dinner Party (uncredited)

Nick Copeland as Reporter (uncredited)

John Dunsmuir as Boxer at Party (uncredited)

Pat Flaherty as Fighter at Party (uncredited)

Bess Flowers as Nick's Party Guest (uncredited)

Douglas Fowley as Taxi Driver (uncredited)

Christian J. Frank as Plainclothesman (uncredited)

Kay Garrett as Nightclub Patron (uncredited)

Kenneth Gibson as Apartment Clerk (uncredited)

Dick Gordon as Night Club Patron (uncredited)

Creighton Hale as Reporter (uncredited)

Sherry Hall as Taxi Driver (uncredited)

Edward Hearn as Detective (uncredited)

Robert Homans as Billy the Detective (uncredited)

John Irwin as 'Face' Tefler (uncredited)

Thomas E. Jackson as Reporter (uncredited)

Sydney Jarvis as Witness (uncredited)

Tiny Jones as Woman Buying Newspaper (uncredited)

Kenner G. Kemp as Night Club Patron (uncredited)

John Larkin as Porter (uncredited)

Dixie Laughton as Janitress (uncredited)

Walter Long as Stutsy Burke (uncredited)

Fred Malatesta as Joe - Headwaiter (uncredited)

Hans Moebus as Night Club Patron (uncredited)

William H. O'Brien as Bartender (uncredited)

Frank O'Connor as Detective Waiter (uncredited)

Henry Otho as Burly Party Waiter-Bodyguard (uncredited)

Garry Owen as Detective (uncredited)

Lee Phelps as Detective (uncredited)

Alexander Pollard as Waiter Hired for Dinner (uncredited)

Albert Pollet as Waiter Hired for Dinner (uncredited)

Bob Reeves as Cop (uncredited)

Bert Roach as Crying Man at Party (uncredited)

Rolfe Sedan as Waiter (uncredited)

Gertrude Short as Marian (uncredited)

Lee Shumway as Plainclothesman (uncredited)

Skippy as Asta (uncredited)

Pietro Sosso as Butler (uncredited)

Ben Taggart as Police Captain (uncredited)

Phil Tead as Reporter (uncredited)

George Templeton as Reporter (uncredited)

Harry Tenbrook as Guest at Nick's Party (uncredited)

Huey White as Minor Role (uncredited)

Leo White as Leo - Waiter (uncredited)

Charles Williams as Fighter Manager (uncredited)