Middle Cove is a suburb on the Lower North Shore of Sydney, in the state of New South Wales, Australia 9 kilometres north of the Sydney central business district, in the local government area of the City of Willoughby. Middle Cove is bounded to the north, east and south by Middle Harbour and to the west by Eastern Valley Way. Middle Cove shares its postcode, 2068, with the surrounding suburbs of Castlecrag and Willoughby North. In 2016 Middle Cove was ranked in the top 30 of Sydney's most liveable suburbs.