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

Richard Denning

Jeff, Protective Association Henchman

Archie Twitchell

Interne

Eddie Marr

Bert, Fight Trainer

George Magrill

2nd Gangster

Charles Trowbridge

Dr. Jones

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)

Dorothy Dayton

Nightclub Girl (uncredited)

Robert Homans

Detective (uncredited)

Gwen Kenyon

Fight Spectator (uncredited)

Grace Lem

Chinese Woman (uncredited)

Joyce Mathews

Nightclub Girl (uncredited)

Ivan Miller

Politician (uncredited)

Moy Ming

Businessman (uncredited)

Cyril Ring

Fight Spectator (uncredited)

Ben Taggart

Henchman (uncredited)

Luana Walters

Nightclub Girl (uncredited)

Pierre Watkin

Dist. Atty. Philips (uncredited)

Florence Wix

Nightclub Patron (uncredited)