Brattlikollen is a station on Lambertseter Line (Line 4) of the Oslo Metro. The station is between Ryen and Karlsrud, 7.8 km from Stortinget. The station was opened on 28 April 1957 as a tramway and on 22 May 1966 as a metro. The station's architect was Edgar Smith Berentsen. The station is on the south side of Brannfjell. The neighborhood around the station is mainly residential with a mixture of detached houses and apartment buildings. Access to the station is from the local road Sandstuveien which passes below the line immediately south of the station.