Trondenes Church is the northernmost medieval stone church of Norway and the world's northernmost surviving medieval building. It is a parish church of the Church of Norway in Harstad Municipality in Troms county, Norway. It is located on the northern edge of the town of Harstad. It is the main church for the Trondenes parish which is part of the Trondenes prosti (deanery) in the Diocese of Nord-Hålogaland. The white, stone church was built in a long church style around the year 1435 using plans drawn up by an unknown architect. The church seats about 300 people.