is a town in northwestern Guilford County, North Carolina, United States. The population was 3,988 at the 2000 census. The Oak Ridge Military Academy, a private, coed, college-preparatory military boarding school, was established here in 1852. It is the third-oldest military school in the nation still in operation, and it is the official military school of North Carolina, as designated by the state legislature. Until the late 1990s the Oak Ridge area was mostly rural farmland, with numerous tobacco and strawberry farms. However, since its incorporation as a town in 1998, Oak Ridge has undergone rapid suburbanization and population growth. Many of the area's farms have been sold to developers and turned into upper-class housing developments, and several shopping centers have been built around the military academy. Today Oak Ridge is considered to be a wealthy suburb of nearby Greensboro, North Carolina's third-largest city. One rural pastime which is still popular in Oak Ridge is the raising and breeding of horses; each Easter weekend the town hosts a popular horse show .
According to the United States Census Bureau, the town has a total area of 14.7 square miles (38.1 km²), of which, 14.7 square miles (38.0 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.27%) is water.