Foil is an unincorporated community in northern Ozark County. It is about sixteen miles south of Ava on a county road.
A post office called Foil was in operation between 1909 and 1969. It is unknown why the name "Foil" was applied to this community.
Coordinates: 36°45′22″N 92°38′08″W / 36.75611°N 92.63556°W