Anna May Wong

Dr. Mary Ling

Akim Tamiroff

Frank Baturin

J. Carrol Naish

The Professor

Sidney Toler

Dr. Chang Ling

Philip Ahn

Robert 'Bob' Li

Anthony Quinn

Mike Gordon

Bernadene Hayes

Dolly Warren

Roscoe Karns

Rip Harrigan

Ray Mayer

Potatoes

Richard Denning

Jeff, Protective Association Henchman

Archie Twitchell

Interne

Eddie Marr

Bert, Fight Trainer

George Anderson

Detective

Charles B. Wood

1st Gangster

George Magrill

2nd Gangster

Charles Trowbridge

Dr. Jones

Lily King

Chinese Woman

Chester Gan

Mr. Foo

Pat West

Announcer at Fight

Guy Usher

Investigator

Sam Ash

Barber (uncredited)

Marie Burton

Nightclub Girl (uncredited)

Dolores Casey

Nightclub Girl (uncredited)

Ethel Clayton

Nightclub Patron (uncredited)

Wong Chung

Chinese Man (uncredited)

Sheila Darcy

Nightclub Girl (uncredited)

Dorothy Dayton

Nightclub Girl (uncredited)

Paula DeCardo

Dancer (uncredited)

Raoul Freeman

Detective (uncredited)

Norah Gale

Nightclub Girl (uncredited)

George Golden

Nightclub Patron (uncredited)

Harriette Haddon

Dancer (uncredited)

Robert Homans

Detective (uncredited)

Gwen Kenyon

Fight Spectator (uncredited)

Judith King

Nightclub Girl (uncredited)

Charles Lee

Tommy Wu (uncredited)

Grace Lem

Chinese Woman (uncredited)

Joyce Mathews

Nightclub Girl (uncredited)

Larry McGrath

Henchman (uncredited)

Ivan Miller

Politician (uncredited)