Sinsen is a rapid transit station on the Ring Line of the Oslo Metro. It is located at Sinsen in the Sagene borough of Oslo, Norway. Next to the station is the tram station Sinsenkrysset, that has been part of the Sinsen Line of the Oslo Tramway since 1939. The station opened on 20 August 2006, as part of the first section of the Ring Line. The station is served by line 6 of the metro, as well as several local bus services. Sinsen is a mixed residential and commercial area.