Bangor is a suburb in southern Sydney, in the state of New South Wales, Australia. Bangor is located 28 kilometres south of the Sydney central business district, in the local government area of the Sutherland Shire in the area commonly called Menai. Bangor sits south of the Georges River and to the west of the Woronora River.

Southern Sydney is the southern metropolitan area of Greater Sydney, in the state of New South Wales, Australia.