Rodolphus Dickinson (December 28, 1797 March 20, 1849) was a U.S. Representative from Ohio. Born in Hatfield, Massachusetts, Dickinson attended the public schools and Williams College, Williamstown, Massachusetts from 1818 to 1821. He studied law. He was admitted to the bar and commenced practice in Tiffin, Ohio. He was appointed prosecuting attorney for Seneca County in 1824, for Williams County in 1826, and for Sandusky County in 1827. He moved to Lower Sandusky, Ohio, in 1826. He served as a member of the Board of Public Works of Ohio 1836 1845.