Ashby-de-la-Zouch, also spelled Ashby de la Zouch, is a market town and civil parish in the North West Leicestershire district of Leicestershire, England, near to the Derbyshire and Staffordshire borders. Its population at the 2021 census was 16,491. Ashby de la Zouch Castle was an important fort in the 15th to 17th centuries. During the 19th century, the town's main industry was ribbon manufacturing.