The Old Sheldon Church Ruins is a historic site located in northern Beaufort County, South Carolina, approximately 17 miles (30 km) north of Beaufort in the Sheldon area. Known also as the Sheldon Church or Old Sheldon Church, the building was originally known as Prince William's Parish Church. The church was built as a chapel of ease in the English Georgian style, using the Roman Tuscan or Doric order, between 1745 and 1753.