Duffield is a town in Scott County, Virginia, United States. The population was 91 at the 2010 census. It is part of the Kingsport–Bristol (TN)–Bristol (VA) Metropolitan Statistical Area, which is a component of the Johnson City–Kingsport–Bristol, TN-VA Combined Statistical Area – commonly known as the "Tri-Cities" region.
Duffield is located at 36°43′11″N 82°47′51″W / 36.71972°N 82.7975°W / 36.71972; -82.7975 (36.719642, -82.797393).
According to the United States Census Bureau, the town has a total area of 0.6 square miles (1.6 km2), all of it land.