The Swan is a 1956 American romantic comedy-drama film directed by Charles Vidor from a screenplay by John Dighton.

The film stars Grace Kelly, Alec Guinness, and Louis Jourdan, with Agnes Moorehead, Jessie Royce Landis, Brian Aherne, Leo G. Carroll, Estelle Winwood, and Van Dyke Parks in supporting roles.

In 1910, Princess Alexandra, the daughter of a minor branch of a European royal house, is urged by her mother to accept her cousin, Crown Prince Albert, as husband so that their family may regain a throne that was taken from them by Napoleon.

Alexandra's mother urges her to show interest in the tutor, Dr. Nicholas Agi, to make Albert jealous and stimulate a proposal from him.

The 1925, 1930, and 1956 films are all based on the 1914 Hungarian play A Hattyú, Vígjáték Három Felvonásban (The Swan, A Comedy in Three Acts) by Ferenc Molnár.

Head of production Dore Schary also announced he intended to remake The Barretts of Wimpole Street with Kelly.

"[8] The film was shot on location in North Carolina, at the 1895 Biltmore Estate of George W. Vanderbilt in Asheville and at Lake Junaluska.

[9] MGM held the release of The Swan to correspond with the civil wedding ceremony of Grace Kelly and Prince Rainier of Monaco, on April 18, 1956.