The Possession of Hannah Grace (released as Cadaver in select international markets) is a 2018 American supernatural horror thriller film directed by Diederik van Rooijen and written by Brian Sieve. The film stars Shay Mitchell, Kirby Johnson, Stana Katic, Grey Damon, and Nick Thune and was produced by Todd Garner and Sean Robins.

The film was released in the United States on November 30, 2018, by Sony Pictures Releasing under the Screen Gems label. It received generally negative reviews from critics but was a commercial success, grossing $43 million worldwide against a production budget of $7.7 million.