Corinne Griffith
— Lady Emma Hart Hamilton
Victor Varconi
— Horatio Nelson
H.B. Warner
— Sir William Hamilton
Ian Keith
— Honorable Charles Greville
Marie Dressler
— Mrs. Hart
Montagu Love
— Capt. Hardy
William Conklin
— Romney
Dorothy Cumming
— Queen Maria Carolina
Michael Vavitch
— King Ferdinand
Evelyn Hall
— Duchess of Devonshire
Helen Jerome Eddy
— Lady Nelson
Ben Alexander
— Young lieutenant
Joan Bennett
— Extra (uncredited)
Andy Devine
— Extra (uncredited)
Joel McCrea
— Extra (uncredited)