The Constant Nymph is a 1928 British silent film drama, directed by Adrian Brunel and starring Ivor Novello and Mabel Poulton. This was the first film adaptation of the 1924 best-selling and controversial novel The Constant Nymph by Margaret Kennedy and the 1926 stage play version written by Kennedy and Basil Dean. The theme of adolescent sexuality reportedly discomfited the British film censors, until they were reassured that lead actress Poulton was in fact in her 20s.

Ivor Novello was a Welsh actor, dramatist, singer and composer who became one of the most popular British entertainers of the first half of the 20th century.