John Bozman Kerr was a U.S. Congressman, representing the sixth district of the state of Maryland from 1849 until 1851. He also served as Chargé d'Affaires to Nicaragua.

Maryland's 6th congressional district elects a representative to the United States House of Representatives from the northwest part of the state. The district comprises all of Garrett, Allegany, Frederick, and Washington counties as well as a portion of Montgomery County. David Trone (D) is its current representative.