The City of Wollongong is a local government area in the Illawarra region of New South Wales, Australia. The area is situated adjacent to the Tasman Sea, the Southern Freeway and the South Coast railway line.

Located 80 kilometres (50 mi) south of Sydney central business district, the City of Wollongong covers 714 square kilometres (276 sq mi) and occupies a narrow coastal strip bordered by the Royal National Park to the north, Lake Illawarra to the south, the Tasman Sea to the east and the Illawarra escarpment to the west.