Katharine Hepburn

Constance Dane Roberti

Charles Boyer

Franz Roberti

John Beal

Johnny Lawrence

Jean Hersholt

Professor Thalma

Sam Hardy

Marx

Inez Courtney

Miss Wilson

Helene Millard

Sylvia DeWitt

Ferdinand Gottschalk

Enrico Pazzini

Susan Fleming

Elise

Lee Kohlmar

Schubert

Jean Howard

Didi Smith-Lennox

Anne Grey

Lady Phyllis Cameron

Lowden Adams

Albert Henderson (uncredited)

Gino Corrado

Messenger (uncredited)

Jay Eaton

Man in Hotel (uncredited)

Dick Elliott

Max - Florist (uncredited)

Sam Hayes

Radio Announcer (uncredited)

Eddie Kane

Mr. Lubin (uncredited)

Cornelius Keefe

Bill (uncredited)

Ray Mayer

Song Promoter at Music Publisher (uncredited)

Torben Meyer

Ritz Headwaiter (uncredited)

Bert Moorhouse

Party Guest / Theatergoer (uncredited)

Edmund Mortimer

New Year's Eve Celebrant (uncredited)

Broderick O'Farrell

Concertgoer (uncredited)

Inez Palange

Violin Student's Mother (uncredited)

Jack Rice

New Year's Eve Celebrant (uncredited)

Jason Robards Sr.

Ticket-Seller (uncredited)

Adrian Rosley

Bierbauer (uncredited)

Alexander Schoenberg

(uncredited)

Larry Steers

New Year's Eve Celebrant (uncredited)

Michael Visaroff

Bassoonist (uncredited)

Stanhope Wheatcroft

Ticket Purchaser (uncredited)

Harry Wilson

Stagehand (uncredited)

Florence Wix

Concertgoer (uncredited)

George Webb

(uncredited)