Chester Cathedral is a Church of England cathedral and the mother church of the Diocese of Chester. It is located in the city of Chester, Cheshire, England. The cathedral, formerly the abbey church of a Benedictine monastery dedicated to Saint Werburgh, is dedicated to Christ and the Blessed Virgin Mary. Since 1541, it has been the seat of the bishop of Chester.
The cathedral is a Grade I listed building, and part of a heritage site that also includes the former monastic buildings to the north, which are also listed Grade I. The cathedral's construction dates from between the 10th century and the early 16th century, having been modified a number of times throughout history, a typical characteristic of English cathedrals; however, the site itself may have been used for Christian worship since Roman times. All the major styles of English medieval architecture, from Norman to Perpendicular, are represented in the present building.