Lilies of the Field is a 1963 American comedy-drama film adapted by James Poe from the 1962 novel of the same name by William Edmund Barrett, and stars Sidney Poitier, Lilia Skala, Stanley Adams, and Dan Frazer. It was produced and directed by Ralph Nelson. The title comes from the Sermon on the Mount in the Bible (Matthew 6:27–33 and its parallel scripture from Luke 12:27–31). It features an early film score by prolific composer Jerry Goldsmith. The film was turned into a Broadway musical in 1970, retitled Look to the Lilies, with Shirley Booth in the role of Mother Maria Marthe.

It tells the story of an itinerant worker who encounters a group of East German nuns, who believe he has been sent to them by God to build them a new chapel.

It was praised by critics and received numerous accolades, including 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 an Academy Award for a leading role and the second Black actor to win after Hattie McDaniel won for Best Supporting Actress for Gone with the Wind.

In 2020, the film was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".