Hillesley and Tresham is a civil parish in the Stroud District of Gloucestershire, England. It had a population of 591 according to the 2001 census, decreasing to 391 at the 2011 census. The parish contains the villages of Hillesley and Tresham. The Lyvett (Levett) family, an Anglo-Norman family prominent in Sussex, were lords of the manor of Hillesley in 12th and 13th centuries.