Sir Roger Gresley, 8th Baronet (27 December 1799 – 12 October 1837) was an English author and Tory politician who sat in the House of Commons from 1835 to 1837. Gresley was the son of Sir Nigel Bowyer Gresley, 7th Baronet and his second wife Maria-Eliza Garway, daughter of , of Worcester. He succeeded to the baronetcy on the death of his father on 26 March 1808. He entered Christ Church, Oxford on 17 October 1817, where he remained until 1819, leaving the university without a degree. Gresley was a well known London dandy and is said to have gambled away much of his fortune, having to sell most of his assets to remain solvent. In 1827 he sold Sir Nigel Gresley's Canal which his grandfather had built in connection with his mining interests.