Commodore James Armstrong (17 January 1794 – 27 August 1868) was an officer in the United States Navy. Armstrong joined the United States Navy as a midshipman in 1809 and served on the sloop-of-war Frolic when it was seized by the British in 1814 during the War of 1812. Promoted to commodore and given command of the East India Squadron in 1855, Armstrong served aboard the squadron's flagship, San Jacinto during the Second Opium War. Following the battle of the Pearl Forts, Armstrong's health began to fail and he returned to the United States.