James Murray Mason (November 3, 1798 – April 28, 1871) was a United States Representative and United States Senator from Virginia. He was a grandson of George Mason (a Founding Father) and represented the Confederate States of America as appointed commissioner of the Confederacy to the United Kingdom and France between 1861 and 1865 during the American Civil War. Mason lived in exile in Canada from 1865 until 1868, when he returned to the USA.