Bryan Manor is a historic archaeological site located near Williamsburg, York County, Virginia. It is the site of a plantation established by Frederick Bryan after purchasing a 500-acre plot in 1757. A map by the French cartographer Desandrouin in 1781–1782 indicated a complex of five buildings. A survey in 1976 identified an unusual footing of bog iron bonded with shell mortar. Also on the site is the stone slab over the grave of John Bryan, one-year-old son of Frederick Bryan, who died in 1760. It was added to the National Register of Historic Places in 1978.