St. Mary Catholic Church is a Catholic parish in the city of Mt. Angel, Oregon, United States in Marion County. It was originally established to serve German immigrants who began arriving in this area of the northern Willamette Valley in 1867. Mathias Butsch became the Catholic community's leader and founder. The parish church, built in 1912, was listed on the U.S. National Register of Historic Places in 1976. The church contains 18 original stained-glass windows.