The Manayunk/Norristown Line is a commuter rail service in Southeastern Pennsylvania between Center City Philadelphia and Norristown, and one of the 13 lines in SEPTA's Regional Rail network. It has the second highest operating ratio (19.9%) on the SEPTA Regional Rail network.

Norristown is a municipality with home rule status and the county seat of Montgomery County, Pennsylvania, United States, in the Philadelphia metropolitan area. Located along the Schuylkill River, approximately 6 miles (9.7 km) from Philadelphia, Norristown had a population of 35,748 as of the 2020 census. It is the fourth-most populous municipality in the county and second-most populous borough in Pennsylvania.