Gillian Baverstock, née Gillian Mary Pollock (15 July 1931, Bourne End, Buckinghamshire, England – 24 June 2007, Ilkley, West Yorkshire, England) was a British author and elder daughter of English novelist Enid Blyton and her first husband, Hugh Pollock. She wrote and spoke to audiences and the media extensively about her mother as well as her own childhood and life.

AKA Gillian Mary Darrell Waters - After divorce and remarriage, her mother decided that the best thing for Gillian and her sister was not to have contact with their father, of whom they had not seen much during World War II. Enid even changed her daughters' surname to 'Darrell Waters'.