The Constant Nymph is a novel by Margaret Kennedy which tells the story of a teenaged girl who falls in love with a family friend who eventually marries her cousin. The two girls show mutual jealousy over their common love for the man. The novel was adapted into a play by Kennedy and Basil Dean .

The movie was first adapted for film in 1928, adapted by Adrian Brunel and Alma Reville and directed by Brunel and Basil Dean. It stars Ivor Novello, Mabel Poulton and Benita Hume .

It was again adapted in 1934, adapted by Dorothy Farnum and directed by Dean. It stars Victoria Hopper , Brian Aherne and Leonora Corbett .

It was adapted for film a third time in 1943. It stars Charles Boyer, Joan Fontaine, Brenda Marshall, Alexis Smith, Charles Coburn, Dame May Whitty and Peter Lorre. It was adapted by Kathryn Scola and directed by Edmund Goulding . It was nominated for the Academy Award for Best Actress (Joan Fontaine).