Warnock is an unincorporated community in northern Smith Township, Belmont County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 43967. It lies along State Route 9.
Warnock is part of the Wheeling, WV-OH Metropolitan Statistical Area.
A former variant name was Warnocks Station. A post office called Warnock has been in operation since 1857. The community was named for the Warnock family, the original owners of the town site.
Coordinates: 40°01′21″N 80°56′14″W / 40.02250°N 80.93722°W