Starting with the 2009 season, the Baltimore Orioles baseball club has added a patch to the left arm of their uniforms that features a round version of the Maryland flag.
Maryland | University of Maryland | Bethesda, Maryland | Annapolis, Maryland | Flag of the United States | Silver Spring, Maryland | Montgomery County, Maryland | Cumberland, Maryland | Governor of Maryland | Frederick, Maryland | Maryland House of Delegates | Hagerstown, Maryland | Emmitsburg, Maryland | Columbia, Maryland | Westminster, Maryland | Laurel, Maryland | Howard County, Maryland | Havre de Grace, Maryland | University of Maryland, Baltimore | Bowie, Maryland | Maryland Institute College of Art | Kensington, Maryland | flag | Anti-Flag | Rockville, Maryland | Potomac, Maryland | Landover, Maryland | Hunt Valley, Maryland | Flag of France | Severna Park, Maryland |
Several Maryland county flags, such as Calvert County, Baltimore County, and Anne Arundel County, incorporate the coat of arms of the Calvert family in their designs, due to the design being featured in the Maryland state flag, and the Calvert family's prominence in Maryland history.