Woolloomooloo (/ˈwʊlᵿmᵿˌluː/ WUU-lu-mu-LOO) is a harbourside, inner-city eastern suburb of Sydney, New South Wales, Australia. Woolloomooloo is 1.5 kilometres east of the Sydney 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.
Long a poorer working-class district of Sydney, it has changed only recently with gentrification of the inner city areas of Sydney. The redevelopment of the waterfront, particularly the construction of the housing development on the Finger Wharf, has caused major change. Areas of public housing (Housing NSW a.k.a. "Housing Commission") still exist in the suburb.