St. Peter's Episcopal Church is an active and historic Episcopal church in the Diocese of Newark in Morristown, New Jersey. Located on South Street, St. Peter's congregation has roots going back to the 1760s. Officially founded in 1827, with the current building consecrated in 1911, it is notable for its gothic-revival architecture, medieval interior and fine stained glass. St. Peter's congregation has traditionally worshipped in the High Church tradition. The church was added to the National Register of Historic Places, listed as a contributing property of the Morristown District, on October 30, 1973.

Morristown is a town and the county seat of Morris County, in the U.S. state of New Jersey. Morristown has been called "the military capital of the American Revolution" because of its strategic role in the war for independence from Great Britain. Morristown's history is visible in a variety of locations that collectively make up Morristown National Historical Park, the country's first National Historical Park.