Potomac–Broadway Historic District is a national historic district at Hagerstown, Washington County, Maryland, United States. The district is located in the north downtown area and consists largely of a late 19th and early 20th century residential area with most buildings dating from 1870 to 1930. Architectural styles represented include Victorian Gothic, Queen Anne, Colonial Revival, and American Foursquare. It was added to the National Register of Historic Places in 1990.