That Hamilton Woman, also known as Lady Hamilton, is a 1941 black-and-white historical film drama produced and directed by Alexander Korda for his British company during his exile in the United States. Set during the Napoleonic Wars, the film tells the story of the rise and fall of Emma Hamilton, dance-hall girl and courtesan, who married Sir William Hamilton, British ambassador to the Kingdom of Naples, and later became Admiral Horatio Nelson's mistress.

Vivien Leigh, styled as Lady Olivier after 1947, was a British actress. She won the Academy Award for Best Actress twice, for her performances as Scarlett O'Hara in Gone with the Wind (1939) and Blanche DuBois in the film version of A Streetcar Named Desire (1951), a role she had also played on stage in London's West End in 1949. She also won a Tony Award for her work in the Broadway musical version of Tovarich (1963). Although her career had periods of inactivity, in 1999 the American Film Institute ranked Leigh as the 16th-greatest female movie star of classic Hollywood cinema.