The Diocese of Arras is a Roman Catholic diocese located in northern France. It was established in the 6th century and is part of the Metropolitan Archdiocese of Lille. The diocese covers the area around the city of Arras and includes several towns and communities within the region. The diocese has a rich history, with its cathedral, Arras Cathedral, serving as a central place of worship. Over the centuries, it has played a significant role in the spiritual and cultural life of the area, contributing to the development of the local community and maintaining various religious traditions.