Woolloomooloo is a harbourside, inner-city eastern suburb of Sydney, New South Wales, Australia, 1.5 kilometres east of the central business district, in the local government area of the City of Sydney. It is in a low-lying, former docklands area at the head of Woolloomooloo Bay, on Sydney Harbour. The Domain sits to the west, the locality of East Sydney is near the south-west corner of the suburb and the locality of Kings Cross is near the south-east corner. Potts Point is immediately to the east.

The Eastern Suburbs is the eastern metropolitan region of Sydney, New South Wales, Australia.