Thirty Day Princess

Sylvia Sidney Nancy Lane / Princess Catterina

Cary Grant Porter Madison III

Edward Arnold Richard M. Gresham

Henry Stephenson King Anatol XII

Vince Barnett Count Nicholeus

Edgar Norton Baron Passeria

Ray Walker Dan Kirk

Lucien Littlefield Parker

Robert McWade Managing Editor

George Baxter Donald Spottswood

Marguerite Namara Lady in Waiting

William Arnold City Editor (uncredited)

William Augustin Detective #2 (uncredited)

Allan Cavan Court Officer (uncredited)

Jean Chatburn Blonde (uncredited)

Oliver Cross Court Officer (uncredited)

Edgar Dearing Tim - Policeman at Mrs. Schmidt's (uncredited)

Sayre Dearing Ceremonial Guest (uncredited)

Adolph Faylauer Reception Guest (uncredited)

Jean Fowler Guest (uncredited)