Lilies of the Field is a 1963 American comedy-drama film directed and produced by Ralph Nelson, adapted by James Poe from William Edmund Barrett’s 1962 novel of the same name. Starring Sidney Poitier, Lilia Skala, Stanley Adams, and Dan Frazer, the film takes its title from the Bible’s Sermon on the Mount (Matthew 6:27–33 and Luke 12:27–31). The story follows Homer Smith, an itinerant handyman, who encounters a group of East German nuns in the Arizona desert. Led by the determined Mother Maria Marthe, the nuns believe Homer has been sent by God to build them a chapel.

Praised by critics, the film earned five Academy Award nominations, including Best Picture and Best Supporting Actress for Skala. Poitier won the Academy Award for Best Actor, becoming the first Black actor to win in a leading role and the second Black actor overall to receive an Oscar after Hattie McDaniel. The film also features an early score by Jerry Goldsmith. In 2020, it was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".

The film was turned into a Broadway musical in 1970, Look to the Lilies, with Shirley Booth starring as Mother Maria Marthe.