Ilen Church (Norwegian: Ilen kirke) is a parish church of the Church of Norway in Trondheim municipality in Trøndelag county, Norway. It is located in the Ila area in the city of Trondheim, on the 250-metre (820 ft) wide isthmus between the river Nid and the Trondheimsfjord. It is the church for the Ilen parish which is part of the Heimdal og Byåsen prosti (deanery) in the Diocese of Nidaros. The gray, stone church was built in a cruciform style in 1889 by the local building company of Jacob Digre, according to a design by Trondheim based architect Eugene Sissenére (b. 1858). The church seats about 550 people, although it originally fit about 900. The seating was reduced to meet the fire regulations.
A graveyard belonging to the parish is located at Ilsvika in the neighboring district of Ila, a short distance from the church site.