Levin Mynn Powell (April 8, 1798 - January 15, 1885) was an officer of the United States Navy. He is recalled for his service in the Second Seminole War and the development of riverine tactics for the prosecution of that war. These techniques would be employed more than a century later, in Vietnam. He would also serve with the Union Navy in the American Civil War. He was born April 8, 1798, in Winchester, Virginia; he joined the Navy in 1813. His early service spanned the globe. His service fighting pirates in the Gulf of Mexico would lead to his promotion to Lieutenant in 1826. Between 1836 and 1838 he commanded forces and the USRC Washington during the Second Seminole War, fighting the Seminole in Florida. From 1840 to 1841, Powell commanded the brig USS Consort, and surveyed the coast from the Appalachicola River to the Mississippi River. He was promoted to commander in 1843. During the American Civil War, Powell commanded the USS Potomac from 1861 to 1862, on blockade duty in the Gulf of Mexico. After the war he was promoted to commodore, and then to rear admiral on the retired list in 1869.