Fort Beauregard was a Civil War-era rectangular earthen fort located on a 430 feet (130 m) promontory above Tuscarora Creek just southeast of Leesburg, Virginia.
Fort Beauregard commanded the southern eastern approaches to the town, including the Old Carolina Road and the Alexandria and Winchester Turnpike (present day Virginia State Route 7).
The fort may have been only partially constructed, and was never occupied by Confederates in force before Leesburg was evacuated in the spring of 1862.
The fort was subsequently destroyed, and the exact location remains unknown.
[1] The likely site currently sits in the privately owned "Beauregard Estates" neighborhood.