The Passion Flower is a 1921 American drama film starring Norma Talmadge, Courtenay Foote, and Eulalie Jensen, and directed by Herbert Brenon. It is based on the 1913 Spanish play The Unloved Woman (Spanish: La malquerida) by Jacinto Benavente. The play was translated into English by John Garrett Underhill as The Passion Flower and successfully produced in 1920 in New York City. The plot of the film involves the forbidden love of a man for his stepdaughter which leads to tragedy and murder.