Robert William Wells (November 29, 1795 – September 22, 1864) was an American lawyer and jurist who served as judge of the United States District Court for the Western District of Missouri (1857–1864) and the United States District Court for the District of Missouri (1836–1857). He previously served as the 3rd attorney general of Missouri from 1826 to 1836. Wells is credited with designing the Missouri State Seal.