William Powell

Philo Vance

Louise Brooks

The Canary

Jean Arthur

Alice LaFosse

James Hall

Jimmy Spottswoode

Charles Lane

Charles Spottswoode

Lawrence Grant

John Cleaver

Gustav von Seyffertitz

Dr. Ambrose Lindquist

E.H. Calvert

Dist. Atty. John F.X. Markham (as Captain E. H. Calvert)

Eugene Pallette

Sgt. Ernest Heath

Ned Sparks

Tony Skeel

Louis John Bartels

Mannix

Tim Adair

George Y. Harvey (uncredited)

Margaret Livingston

Double for Margaret O'Dell (uncredited)

Oscar Smith

Stuttering Hallboy (uncredited)