Bellandur is a suburb in south-east Bangalore, Karnataka, India. It is bounded by HSR Layout to the west, Devarabisanahalli to the east, Sarjapur Road to the south, and the Bellandur Lake to the north. The Bellandur Lake is the largest lake in Bangalore, and separates Bellandur from the HAL Airport. The Outer Ring Road passes through Bellandur, making the area an important transit point between east and south Bangalore.