John Ruan House
 The John Ruan House is a historic mansion in the Frankford neighborhood of Philadelphia Pennsylvania. It was built in 1796 as the home of Dr. John Ruan (June 9 1771 St. Croix West Indies – July 2 1845 Bristol Pennsylvania) a physician and community leader.The 2½-story house the oldest of its size and stature still standing in Frankford was listed on the National Register of Historic Places in 1985.