Darling Harbour is a locality of the city centre of Sydney, Australia. It is a large recreational and pedestrian precinct that is situated on western outskirts of the Sydney central business district. The locality extends northwards from Chinatown, along both sides of Cockle Bay to King Street Wharf on the east, and to the suburb of Pyrmont on the west. Cockle Bay is just one of the waterways that makes up Darling Harbour, which opens north into the much larger Port Jackson.

The precinct and its immediate surroundings are administered independently of the local government area of the City of Sydney, by a New South Wales state government statutory authority, the Sydney Harbour Foreshore Authority.