St. Paul's Chapel is an historic Carpenter Gothic style Episcopal church at Crownsville, Anne Arundel County, Maryland. It is a small board-and-batten frame church composed of a simple rectangular nave, a small entrance porch, a small deep chancel, and two very small utility sections added to the sides of the chancel. There is a small cemetery on the property dating from the 1860s. It may be an example of a church built by following plans of Richard Upjohn, the noted 19th-century American architect.
St, Paul's Chapel is now part of St. Paul's Anglican Church in the Anglican Province of America. Its current rector is the Right Rev. Robert Samuel Loiselle, Sr., who is also assistant bishop of the Anglican Province of America. In 2008, a new larger church building, designed to be compatible architecturally with the chapel was built next to it and the two were joined together.