Frederick Douglass High School (FDHS), is an American public high school established in 1935 and located in the Croom census-designated place of unincorporated Prince George's County, Maryland, United States, with a mailing address of Upper Marlboro and near Upper Marlboro.

[7] The present Frederick Douglass High School campus at 8000 Croom Road opened in 1959.

A commemorative plaque was installed at the site in September 2000 by the Frederick Douglass High School Class of 1950.

[5] The school was previously defined by the U.S. Census Bureau as being in the Greater Upper Marlboro CDP.

The PGCPS operations officer, Monica Goldson, stated that the Douglass principal reviewed the new number and that the district took into account the total classroom space.

[11] In 2015 the school received a new tennis court and rubberized field; the upgrades to its athletic facilities totaled $317,270.