The Maryland National Guard Outstanding Unit Ribbon honors a Maryland National Guard unit each year that sets itself apart from other units through outstanding service, as determined by the Adjutant General.
The Maryland National Guard is composed of the Maryland Army National Guard and the Maryland Air National Guard. The origins of the Army component date back to colonial militia activity as early as 1634 near the Chesapeake Bay; it is currently headquartered in Baltimore. The Air component, also based in Baltimore, consists primarily in the 175th Wing and originated in 1921 with the federal recognition of the 104th Observation Squadron.
The ribbon is black with two thick vertical yellow stripes toward the center.