Robert Steuart (1806 – 15 July 1843) was a British Whig politician. Born in 1806, and baptised on 9 July of the same year, Steuart was the first son of Robert Steuart of Alderston and Louisa Clementina. He was educated at Brasenose College, Oxford, from 1824 and, in 1827, married Maria, daughter of Samuel Dalrymple of Nunraw and North Berwick. They had three children—one son and two daughters, including Robert Dalrymple Steuart (1836–1864). Shortly after, he accepted a position as chargé d'affaires and consul general to Colombia, where he died of a fever in 1843.