William Powell

Philo Vance

James Hall

Jimmie Spottswoode

Louise Brooks

The Canary

Jean Arthur

Alice LaFosse

Charles Lane

Charles Spottswoode

Lawrence Grant

John Cleaver

Gustav von Seyffertitz

Dr. Ambrose Lindquist

E.H. Calvert

District Attorney Markham (as Captain E. H. Calvert)

Eugene Pallette

Sergeant Heath

Ned Sparks

Tony Skeel

Louis John Bartels

Louis Mannix

Tim Adair

George Y. Harvey (uncredited)

Margaret Livingston

Body Double for Louise Brooks (uncredited)

Oscar Smith

Stuttering Hallboy (uncredited)