Forest Glen Park is an unincorporated community in Montgomery County, Maryland, United States, and a residential neighborhood within the Silver Spring census-designated place. The community is adjacent to Rock Creek, Rock Creek Regional Park, and to the United States Army's Forest Glen Annex.

National Park Seminary — later called National Park College — was a private girls' school open from 1894 to 1942. Located in Forest Glen Park, Maryland, its name alludes to nearby Rock Creek Park. The historic campus is to be preserved as the center of a new housing development.