Glassmanor is an unincorporated community and census-designated place in Prince George's County, Maryland, United States.

[citation needed] In the mid-1950s, the Eastover shopping center was built across the highway, followed by other adjoining apartment projects in the 1960s.

Senator George McGovern, who was the Democratic Party's presidential candidate in 1972, lived briefly in Glassmanor while a freshman congressman.

[8] Prince George's County Police Department District 4 Station in Glassmanor CDP, with an Oxon Hill postal address, serves the community.

[12] Elementary schools serving sections of the CDP include Barnaby Manor, Flintstone, Forest Heights, Glassmanor, and Valley View.