John Davenport (January 9, 1788 – July 18, 1855) was a U.S. Representative from Ohio. Born near Winchester, Virginia, Davenport attended the common schools. He moved to Ohio in 1818 and engaged in mercantile pursuits. Davenport settled in Belmont County, Ohio. There he served as member of the State house of representatives in 1824, 1827, and 1830. He served as member of the State senate in 1825 and 1826. John Davenport died in Woodsfield, Ohio, July 18, 1855, with interment at Green Mount Cemetery in Barnesville, Ohio.