Glyndon is an unincorporated community in Baltimore County, Maryland, United States. Founded in 1871 by , the village is located in the northwest section of Baltimore County and is primarily a residential suburb of metropolitan Baltimore City. The village is characterized by the predominance of historic Victorian homes and a strong sense of community among its residents. Glyndon is listed on the National Register of Historic Places (1973) and on the Maryland Inventory of Historic Properties (1973); the Glyndon Historic District was also designated as the first historic district in Baltimore County (1981).