Warrenton is a town in and the county seat of Warren County, North Carolina, United States. The population was 862 at the 2010 census. Warrenton, now served by U.S. routes 158 and 401, was founded in 1779. It became one of the wealthiest towns in the state from 1840 to 1860, being a trading center of an area of rich tobacco and cotton plantations. It has a large stock of historic architecture buildings. More than 90 percent of its buildings are listed in the National Register of Historic Places and its National Historic District encompasses nearly half its area.

Warren County is a county located in the northeastern Piedmont region of the U.S. state of North Carolina, on the northern border with Virginia, made famous for a landfill and birthplace of the environmental justice movement. As of the 2020 census, its population was 18,642. Its county seat is Warrenton. It was a center of tobacco and cotton plantations, education, and later textile mills.