Jean Merilyn Simmons, OBE (31 January 1929 – 22 January 2010) was an English actress and singer. One of J. Arthur Rank's "well-spoken young starlets", she appeared predominantly in films, beginning with those made in Great Britain during and after the Second World War, followed mainly by Hollywood films from 1950 onwards.

Simmons was nominated for the Academy Award for Best Supporting Actress for Hamlet (1948), and won a Golden Globe Award for Best Actress for Guys and Dolls (1955). Other notable film appearances included Young Bess (1953), The Robe (1953), Elmer Gantry (1960), Spartacus (1960), and the 1969 film The Happy Ending, for which she was nominated for the Academy Award for Best Actress. She also won an Emmy Award for the 1983 miniseries The Thorn Birds.