The diocese of Blackburn is diocese of the Church of England in North West England. Its boundaries correspond to northern Lancashire. The diocese contains 211 parishes and 280 churches. Blackburn Cathedral is the seat of the bishop of Blackburn, currently Philip North, and the diocesan offices are also located in Blackburn.
What is now the diocese of Blackburn was historically part of the diocese of York. It became part of the newly created diocese of Chester in 1541, and part of the diocese of Manchester when it was created in 1847. The diocese of Blackburn was in turn established on 12 November 1926 from the northern part of Manchester.