Rufus Paine Spalding (May 3, 1798 – August 29, 1886) was a nineteenth-century politician, lawyer and judge from Ohio. From 1863 to 1869, he served three terms in the U.S. House of Representatives. He also served as a justice of the Ohio Supreme Court from 1849 through 1852 and as a member of the Ohio House of Representatives from 1839 through 1842.