The Stone House, Manassas National Battlefield Park, is a two-story, stone structure in Prince William County, Virginia. It was built as a stop on the Fauquier and Alexandria Turnpike in 1848, but it achieved its main significance during the American Civil War, when it served as a hospital during the First and Second Battles of Manassas. Today it is owned by the National Park Service as a contributing property to the Manassas National Battlefield Park, which is listed on the National Register of Historic Places.