The Blue Lagoon is a 1949 British coming-of-age romance and adventure film directed and co-produced by Frank Launder and starring Jean Simmons and Donald Houston. The screenplay was adapted by John Baines, Michael Hogan, and Frank Launder from the 1908 novel The Blue Lagoon by Henry De Vere Stacpoole. The original music score was composed by Clifton Parker and the cinematography was by Geoffrey Unsworth.

Jean Merilyn Simmons was a British actress and singer. One of J. Arthur Rank's "well-spoken young starlets," she appeared predominantly in films, beginning with those made in Britain during and after the Second World War, followed mainly by Hollywood films from 1950 onwards.