Commodore Arthur Sinclair (28 February 1780 – 7 February 1831) was an early American naval hero, who served in the U.S. Navy during the Quasi-War with France, the First Barbary War and in the War of 1812. His three sons also served in the Navy; they resigned in 1861, however, to serve in the Confederate Navy.Sinclair was the great-grandfather of novelist Upton Sinclair, author of the novel The Jungle (1906).