Gianni Garko, often billed as John Garko and occasionally Gary Hudson, is a Dalmatian Italian actor who found fame as a leading man in 1960s Spaghetti Westerns. He is perhaps best known for his lead role as Sartana, starting with the first official film If You Meet Sartana Pray for Your Death and starring in three sequels as this character, the role played by George Hilton in the third film in the series.

The spaghetti Western is a broad subgenre of Western films produced in Europe. It emerged in the mid-1960s in the wake of Sergio Leone's filmmaking style and international box-office success. The term was used by foreign critics because most of these Westerns were produced and directed by Italians.