Possession is a 1981 psychological horror drama film directed by Andrzej Żuławski and written by Żuławski and Frederic Tuten. The plot obliquely follows the relationship between an international spy (Sam Neill) and his wife (Isabelle Adjani), who begins exhibiting increasingly disturbing behavior after asking for a divorce.

Possession, an international co-production between France and West Germany, was filmed in West Berlin in 1980. Żuławski's only English-language film, it premiered at the 34th Cannes Film Festival, where Adjani won the Best Actress award for her performance. The screenplay was written during the painful divorce of Żuławski from actress Malgorzata Braunek. While not commercially successful either in Europe or in the United States, with the latter only receiving a heavily edited cut on its initial release, the film eventually acquired cult status and has been more positively appraised in later years.