At Play in the Fields of the Lord (1991) is a drama film directed by Hector Babenco adapted from the 1965 novel of the same name by American author Peter Matthiessen. The screenplay was written by Babenco and Jean-Claude Carrière. It stars Tom Berenger, Aidan Quinn, Kathy Bates, Daryl Hannah, John Lithgow and Tom Waits.

The films tells of Americans Lewis Moon (Tom Berenger) and Wolf (Tom Waits) who, when their plane runs out of gas, are stranded in Mae de Deus an outpost in the deep Brazilian Amazon River basin.

Martin and Hazel Quarrier are small-town fundamentalist missionaries sent to the jungles of South America to convert the Indians. Their remote mission was previously run by the Catholics, before the natives murdered them all. They are sent by the pompous Leslie Huben, who runs the missionary effort in the area but who seems more concerned about competing with his Catholic 'rivals' than in the Indians themselves. Hazel is terrified of the Indians while Martin is fascinated. Soon American pilot Lewis Moon joins the Indian tribe but is attracted by Leslie's young wife, Andy. Can the interaction of these characters and cultures, and the advancing bulldozers of civilization, avoid disaster? Written by Reid Gagle