Impossible Love (German: Unmögliche Liebe) is a 1932 German drama film directed by Erich Waschneck and starring Asta Nielsen, Ery Bos and Ellen Schwanneke. It was the final film of Nielsen, and the only sound film she appeared in. It premiered at the Mozartsaal in Berlin. Neilsen had been a major star during the First World War and the early 1920s but her screen career gradually declined and she hadn't appeared in a film since That Dangerous Age in 1927. Four years after making Impossible Love she returned to her native Denmark. It is also known by the alternative title of Crown of Thorns.

The film is based on the 1929 novel of the same title by Alfred Schirokauer. It was shot at the Johannisthal Studios in Berlin. The film's sets were designed by the art director Hans Jacoby.