Open Range is a 2003 American Revisionist Western film directed and co-produced by Kevin Costner, written by Craig Storper, based on the novel The Open Range Men by Lauran Paine, starring Robert Duvall and Costner, with Annette Bening, Michael Gambon, and Michael Jeter appearing in supporting roles. It presents a range war that follows when free-grazing herder "Boss" Spearman (Duvall) and his cowboys enter the Montana territory of cattle baron Denton Baxter (Michael Gambon).

The film was the final on-screen appearance of Jeter, who died before it was released, and the film was dedicated to Jeter's memory, as well as to Costner's parents, Bill and Sharon. It was a box office success and was critically praised.