Gary Cooper as Casanova (Cass) Brown

Teresa Wright as Isabel Drury

Frank Morgan as Mr. Ferris

Anita Louise as Madge Ferris

Edmund Breon as Mr. Drury

Patricia Collinge as Mrs. Drury

Jill Esmond as Dr. Zernerke

Mary Treen as Monica Case, the Maid

Emory Parnell as Frank, the Bell Captain

Isobel Elsom as Mrs. Ferris

Halliwell Hobbes as Charles, the Butler

Charles Cane as Hicks

Larry Olsen as Junior

Irving Bacon as Hotel Manager

Dorothy Tree as Nurse Clark

Robert Emmett Keane as Yokes

Billy Bletcher as Father in Waiting Room (uncredited)

James Burke as O'Leary (uncredited)

Milton Kibbee as Father at Baby Window (uncredited)

Harry 'Snub' Pollard as Father at Baby Window (uncredited)

Nell Craig as Nurse Crampton

Robert Dudley as Justice Of The Peace

Sarah Padden as Mrs. Smith

Grady Sutton as Best Man

Julia Faye as X-Ray Nurse (uncredited)

Bud Jamison as Father at Baby Window (uncredited)

Byron Foulger as Fletcher (uncredited)

Ezelle Poule as Woman in License Bureau (uncredited)

Gladden James as Doctor with Spano Baby (uncredited)