St. Paul's Church, also known as St. Paul's Church, Baden, or St. Paul's Parish, Prince George's County, is located at 13500 Baden-Westwood Road, in Baden, a community near Brandywine in Prince George's County, Maryland. It was originally constructed in 1733–1735. A porch on the north side was enclosed in 1769, and in 1793 an addition of 26 by 30 feet was made to the south side. The Bishop's Window, a memorial to Bishop Thomas John Claggett, is at the chancel window. In 1921 the sanctuary was widened and the chancel deepened.St. Paul's Church is significant in the history of the Episcopal Church in Maryland for several reasons. First, the perpetuation of this church has provided a record of the religious life of its founders and the generations who followed beginning in 1733. Secondly, St. Paul's illustrates the evolution of a small, rural, colonial church into an American-style cruciform structure. Third, St. Paul's also demonstrates the part that agriculture, particularly of tobacco, played in the 18th century history of the Church of England in Maryland.
The building is a brick structure laid up in Flemish bond with a pattern of glazed headers where the brickwork has not been altered. The plan is a Latin cross, with a nave two bays long and transept arms one bay long; the present apse is an alteration.It was listed on the National Register of Historic Places in 1977.