John Young Mason (April 18, 1799 – October 3, 1859) was a United States representative from Virginia, the 16th and 18th United States Secretary of the Navy, the 18th Attorney General of the United States, United States Minister to France and a United States district judge of the United States District Court for the Eastern District of Virginia.

Mason was born on April 18, 1799, in Hicksford (now Emporia) in Greensville County, Virginia.^[1] A member of the prominent Mason Family of Virginia, he was a descendant of Francis Mason, who was an Englishman that migrated to Virginia in the early 1600s.^[2]

He received an Artium Baccalaureus degree in 1816 from the University of North Carolina at Chapel Hill, attended Litchfield Law School and read law in 1819.^[1]

Mason entered private practice in Greensville County from 1819 to 1821.^[1] He continued private practice in Southampton County, Virginia, from 1821 to 1831.^[1] He was a member of the Virginia House of Delegates from 1823 to 1827, and a member of the Senate of Virginia from 1827 to 1831.^[1] He was commonwealth's attorney for Greensville County from 1827 to 1831.^[1] He was a delegate to the Virginia constitutional conventions of 1829 and 1850.^[3] In 1847, he was elected as a member of the American Philosophical Society.^[4]

Mason married Mary Ann Fort, the daughter of a prominent land-owner, in 1821 and became a planter himself, as well as continuing as a lawyer. He owned Fortsville located near Grizzard, Sussex County, Virginia.^[5]

Mason died on October 3, 1859, in Paris in the French Empire.^[1] His remains were conveyed to the United States and interred in Hollywood Cemetery in Richmond.^[3]

USS Mason (DD-191) from 1920 to 1940, and USS Mason (DDG-87) from 2003 to present, were named in honor of Secretary of the Navy John Y. Mason, sharing the honor on DDG-87 with another individual of the same last name.^{[citation needed]}

• Virginia Constitutional Convention of 1850