North Narrabeen is a suburb in northern Sydney, in the state of New South Wales, Australia 25 kilometres north of the Sydney central business district, in the local government area of Northern Beaches Council. North Narrabeen is part of the Northern Beaches region.
North Narrabeen lies on the northern shores of Narrabeen lagoon, bounded by Warriewood to the north, Elanora Heights to the west and extends east to the ocean at Narrabeen Head. Narrabeen is opposite on the southern shore of the lagoon.
The northern section of Narrabeen Beach is known as North Narrabeen Beach. This ocean beach, together with the North Narrabeen Surf Lifesaving Club, are to the south of the lagoon in the suburb of Narrabeen.