Darling Harbour is a locality of Sydney, New South Wales, Australia with a large recreational, pedestrian precinct. It is situated at 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.

The Sydney Convention and Exhibition Centre at Darling Harbour was a key meeting venue of APEC Australia 2007 in September, 2007 at which time the political leaders of the 21 member states of the Asia-Pacific Economic Cooperation met.