Heaven Knows, Mr. Allison is a 1957 film which tells the story of a romance between a very religious nun and a United States Marine shipwrecked on a Pacific island. It stars Deborah Kerr and Robert Mitchum.

The movie was adapted by John Huston and John Lee Mahin from the novel by Charles Shaw. It was directed by Huston.

It was nominated for Academy Awards for Best Actress in a Leading Role (Deborah Kerr) and Best Writing, Screenplay Based on Material from Another Medium.