Doctor Rhythm

Bing Crosby Dr. Bill Remsen

Mary Carlisle Judy Marlowe

Beatrice Lillie Mrs. Lorelei Dodge-Blodgett

Andy Devine Officer Lawrence O'Roon

Rufe Davis Al (Zookeeper)

Laura Hope Crews Mrs. Minerva Twombling

Fred Keating Chris LeRoy

John Hamilton Insp. Bryce

Sterling Holloway Luke (Ice-Cream Man)

Henry Wadsworth Otis Eaton (The Drunk)

Franklin Pangborn Mr. Stenchfield (Store Clerk)

Harold Minjir Mr. Coldwater

William Austin Mr. Martingale

Gino Corrado Cazzatta

Harry Stubbs Police Captain

Frank Elliott Lorelei's Butler

Charles R. Moore Tooter, the Chauffeur

Louis Armstrong Trumpet Player

Charlene Arnold Dancer (uncredited)

Joanne Arnold Dancer (uncredited)