Old Union Methodist Church is a historic Methodist church located 0.2 miles (0.32 km) north of Blackbird Crossroads on U.S. 13 in Townsend, New Castle County, Delaware. It was built in 1847, and is a two-story, brick meeting house measuring 40 feet by 60 feet. It is surrounded by a cemetery. The congregation was organized in 1789.It was listed on the National Register of Historic Places in 1973.