Bergen Cathedral (Norwegian: Bergen domkirke) is a cathedral in the city of Bergen in Vestland county, Norway. It is the episcopal seat of the Diocese of Bjørgvin as well as the seat of the "Bergen domkirke" parish and the seat of the Bergen domprosti (arch-deanery). It is part of the Church of Norway. The first recorded historical reference to this church is dated 1181. It retains its ancient dedication to Saint Olaf. The cathedral seats about 900 people.