For the Roman Catholic Cathedral in Newcastle, see St Mary's Cathedral

For the Anglican Cathedral in Newcastle, Australia, see Christ Church Cathedral, Newcastle

The Cathedral Church of St Nicholas is a Church of England cathedral in Newcastle upon Tyne, England. It is the seat of the Bishop of Newcastle and is the mother church of the Diocese of Newcastle, the most northerly diocese of the Anglican Church in England, which reaches from the River Tyne as far north as Berwick-upon-Tweed and as far west as Alston in Cumbria.