Sir Robert Long, 6th Baronet (1705 – 10 February 1767) was an English politician. The only surviving son of Sir James Long, 5th Baronet and his wife Henrietta Greville, Long was baptised on 8 November 1705 at St Martin in the Fields, Westminster, London. Educated at Balliol College, Oxford, he succeeded his father as 6th Baronet on 16 March 1729, and inherited the family estates, including the manors of Draycot and Athelhampton. He was elected Member of Parliament for the rotten borough of Wootton Bassett in 1734, and for Wiltshire in 1741.(See also: Category:Long family of Wiltshire)