Mousehold Heath is an area of heathland and woodland which lies in north east Norwich, England and a designated Local Nature Reserve. It is now mostly covered by broad-leaf semi-natural woodland, although some areas of heath remain and are actively managed. Any resident population is included in the Sewell Ward of Norwich City Council.
In 1144 the body of a boy, William of Norwich, was found on the heath. The story was circulated that his death was the result of ritual murder carried out by Jews and he attained the status of saint and martyr. This was the first medieval example of blood libel against Jews. A chapel was erected on the site where the body was found, and its remains can still be seen on the northern edge of the present heath.
In 1381 the final battle of the Peasants' Revolt took place a few days after a huge meeting of people on the heath occurred on 17 June. There Geoffrey Litster, later to be defeated at the Battle of North Walsham, was proclaimed "King of the Commons".
In the Tudor period, Mousehold Heath stretched as far north as South Walsham and was 35 km (22 mi) round. By 1779, it still stretched to Woodbastwick.
In 1549 Robert Kett, rebelling against agricultural hardships, led a large group of men who camped for six weeks on the heath before the uprising, known as Kett's Rebellion, was suppressed.
Mousehold Heath was famously painted by a number of the Norwich school artists including John Crome and John Sell Cotman. In his autobiographical work Lavengro George Borrow records his meetings with gypsies on the heath. The Norwich born novelist, and one time Lord Mayor, R. H. Mottram was another artist who valued the open space of Mousehold Heath. He once described it as "the property of those who have the privilege of Norwich birth".