The Five Islands Nature Reserve is a protected nature reserve located in the Tasman Sea, off the Illawarra east coast of the state of New South Wales, Australia. The 26-hectare (64-acre) reserve comprises five continental islands that are situated between 0.5 and 3.5 kilometres (0.31 and 2.17 mi) east of Port Kembla. The Five Islands are Flinders Islet (Toothbrush Island), Bass Islet, Martin Islet, Big Island (also called Rabbit or Perkins Island) and Rocky Islet.