Castle Park is a public open space in Bristol, England, managed by Bristol City Council. It is bounded by the Floating Harbour and Castle Street to the south, Lower Castle Street to the east, and Broad Weir, Newgate and Wine Street to the north. Its western boundary is less obviously defined and has been the subject of controversy, perhaps because the area around High Street and St Mary le Port Church, though not part of the park and always intended for development, is often considered at the same time as the park.

Bristol is a city, unitary authority area and ceremonial county in South West England, the most populous city in the region. Built around the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. The county is in the West of England combined authority area, which includes the Greater Bristol area and nearby places such as Bath.