Trinity Episcopal Church and Parish House is a historic Episcopal church located at Watertown in Jefferson County, New York. The church was built in 1889-1890 and is massive, rambling Richardsonian Romanesque–style edifice built of random coursed, ashlar stone with a water table and foundation of similar stone. The parish house was built in 1912–1913.

It was listed on the National Register of Historic Places in 2000.