Young Guns is a 1988 American Western action film directed and produced by Christopher Cain and written by John Fusco. The film dramatizes the adventures of Billy the Kid during the Lincoln County War, which took place in New Mexico in 1877–78. It stars Emilio Estevez as Billy, and Kiefer Sutherland, Lou Diamond Phillips, Charlie Sheen, Dermot Mulroney and Casey Siemaszko as the other Lincoln County Regulators. The supporting cast features Terence Stamp, Terry O'Quinn, Brian Keith, and Jack Palance.

The Lincoln County War was an Old West conflict between rival factions which began in 1878 in Lincoln County, New Mexico Territory, the predecessor of the state of New Mexico, and continued until 1881. The feud became famous because of the participation of William H. Bonney. Other notable participants included Sheriff William J. Brady, cattle rancher John Chisum, lawyer and businessmen Alexander McSween, James Dolan and Lawrence Murphy.