Lochiel is a populated place and former border crossing in southern Santa Cruz County, Arizona, United States, approximately 25 miles east of Nogales. Basically a ghost town, the townsite is located in the southwestern part of the San Rafael Valley on Washington Gulch, about 1.5 miles west of the Santa Cruz River. It was first settled in the late-1870s and mostly abandoned by 1986. The town served the ranches of the San Rafael Valley and the Washington Camp and Duquesne mining towns of the Patagonia Mountains, approximately five miles to the northwest up Washington Gulch.