Herøya Church is a parish church of the Church of Norway in Porsgrunn Municipality in Telemark county, Norway. It is located on Herøya in the town of Porsgrunn. It is one of the churches for the Eidanger parish which is part of the Skien prosti (deanery) in the Diocese of Agder og Telemark. The brick church was built in a rectangular design in 1957 using plans drawn up by the architects Helge Abrahamsen and Hans Grinde. The church seats about 430 people, but can hold up to 700 people if the movable walls are changed to maximize seating in the main room.