Letter from an Unknown Woman is a 2004 Chinese film written and directed by Xu Jinglei and is her second feature film as director after 2002's My Father and I. The film is an adaptation of Stefan Zweig's 1922 novella of the same name which was also adapted in 1948 by screenwriter Howard Koch. The film stars Xu and Jiang Wen as lovers during the 1930s and 1940s in Beijing. The film was produced by . Xu Jinglei won the Best Director award for the film at the 2004 San Sebastián International Film Festival.