St. James's Episcopal Church is an historic Episcopal church at 1991 Massachusetts Avenue in Cambridge, Massachusetts. The parish was founded in 1864 as a mission from Christ Church. The Richardsonian Romanesque building was built in 1888–89 to a design by Henry M. Congdon. The church was built on the site of the Davenport Tavern, a landmark that had stood on that site since c. 1757.