The Trinity Square Historic District is a historic district in the Elmwood neighborhood of Providence, Rhode Island. It includes four properties on the south and west side of Trinity Square, the triangular junction of Elmwood Avenue and Broad Street. The visual focal points of the district are the Grace Church Cemetery, which is located south of the square, and the Trinity United Methodist Church, an imposing Gothic Revival structure built in the mid-1860s to a design by Clifton A. Hall. North of the church stands the Clifton Hall Duplex, designed and occupied by Hall, and the James Potter House, an elaborate Queen Anne mansion built c. 1889 and designed by Stone, Carpenter & Willson.

The district was listed on the National Register of Historic Places in 1980. The Grace Church Cemetery was listed as one of Rhode Island’s “most endangered properties” by the Providence Preservation Society in 2015, for the second consecutive year.