Jean Hagen was an American actress best known for her role as Lina Lamont in Singin' in the Rain (1952), for which she was nominated for an Academy Award for Best Supporting Actress. Hagen was also nominated three times for an Emmy Award for Best Supporting Actress in a Comedy Series for her role as Margaret Williams on the first three seasons (1953–56) of the television series The Danny Thomas Show.

Singin' in the Rain is a 1952 American musical romantic comedy film directed and choreographed by Gene Kelly and Stanley Donen, starring Kelly, Donald O'Connor, and Debbie Reynolds and featuring Jean Hagen, Millard Mitchell and Cyd Charisse. It offers a lighthearted depiction of Hollywood in the late 1920s, with the three stars portraying performers caught up in the transition from silent films to "talkies".