Thomas Shannon (November 15, 1786 – March 16, 1843) served briefly as a U.S. Representative from Ohio from December 1826 to January 1827.
He engaged in agricultural pursuits and later moved to Barnesville in Belmont County in 1812 where he entered the mercantile business.
During the War of 1812 served as captain of Belmont County Company in Colonel John Delong’s regiment.
In 1826, he was elected as an Adams candidate to the 19th Congress to fill the vacancy caused by the resignation of David Jennings and served from December 4, 1826, to March 3, 1827.
He did not seek renomination in 1827 and returned to Barnesville, Ohio, where he became a leaf-tobacco merchant.