Riggs National Bank is a historic former headquarters of Riggs Bank, located at 1503–1505 Pennsylvania Avenue, Northwest, Washington, D.C., in the downtown Washington, D.C. neighborhood. It was designed by architects York and Sawyer in 1899, completed in 1902, and is an example of Classical Revival architecture. Between 1922 and 1924, a west office wing designed by Appleton P. Clark Jr. was added.