Beacon Hill is a suburb of northern Sydney, in the state of New South Wales, Australia 17 kilometres north-east of the Sydney central business district, in the local government area of Warringah Council. It is part of the Northern Beaches region.
Beacon Hill was given the title when the Department of Lands built a trigometric beacon there in 1881.
Little is known of local aboriginal culture in the Beacon Hill area but other local areas towards the sea have a rich and diverse aboriginal background. There are some aboriginal carvings in rocks to the north of Red Hill.
Daniel Egan, a member of the NSW Parliament, purchased two parcels of land on 5 October 1857.
Most of the houses in the suburb were built in the boom days after World War II, in the 1950s and 1960s. Many of the streets in Beacon Hill are named after notable battles, military men or places where Australian troops served in World War II. These include Owen Stanley Avenue, Kokoda Crescent, Goroka Place and Lae Place.