Robert Minor Wallace (August 6, 1856 – November 9, 1942) was a U.S. Representative from Arkansas. Born in , Wallace attended the common schools, and was graduated from Arizona Seminary, Arizona, Louisiana, in 1876.He studied law.He was admitted to the bar at Little Rock, Arkansas, in 1879 and commenced the practice of law in El Dorado, Arkansas.He served as member of the State house of representatives in 1881 and 1882.United States post office inspector 1887-1891.He served as prosecuting attorney for the thirteenth judicial circuit of Arkansas in 1891 and 1892.He served as assistant United States attorney in 1894.