Broad Run is an unincorporated community in Frederick County, Maryland, United States.

[2] During the American Revolutionary War, Peter Suman, a farmer from Broad Run, was one of seven residents of Frederick County who were discovered as conspirators with Great Britain.

On July 25, 1781, Suman and the other conspirators were tried and convicted by Judges Alexander Contee Hanson, Col. James Johnson, and Upton Sheradine as traitors to the revolutionary cause.

In 1851, Manasses Jacob Grove, a native of Broad Run, built a brick storehouse at the crossroads which became the commercial center of the village for over a century, the last general store to operate there closing in the 1960s.

The congregation, originally known as the Broad Run Dunker or German Baptist Church, met for worship services in the schoolhouses around the village for its first century of existence.