Harry Powlett, 4th Duke of Bolton PC (24 July 1691 – 9 October 1759), known until 1754 as Lord Harry Powlett, was a British nobleman and Whig politician, the second son of Charles Paulet, 2nd Duke of Bolton and Frances Ramsden. He sat in the House of Commons from 1715 to 1754, when he took his seat in the House of Lords. During the close of the War of the Spanish Succession, he served as an ADC to the Earl of Galway in Portugal, in 1710. He married Catherine Parry (d. 25 April 1744), by whom he had four children: