Island, located in Little Swan Bay, Port Stephens Kurrajong Island, in the Shoalhaven estuary Lake Illawarra: Berageree Island Bevan's Island Gooseberry Island Hooka Island Picnic Island Cudgeree Island Kooragang Island, in the lower Hunter River Lake Eucumbene: Grace Lea Island Hallstrom Island Heron Island Teal Island Lion Island, in Broken Bay Little Rawdon Island, in Hastings River downstream of Wauchope Long Island, in the Hawkesbury River Lord Howe Island, a small oceanic island in the Tasman Sea, east of the Australian mainland; it is the most remote island of Australia to not fall under external territory status Ball's Pyramid Admiralty Group Manning River estuary: Cabbage Tree Island Dumaresq Island Mitchell's Island Oxley Island Merriman Island, in Wallaga Lake Milson Island, in the Hawkesbury River Montague Island, east of Narooma on the south coast Moon Island, 1 km off Swansea Heads Muttonbird Island, off Coffs Harbour Newry Island, in the Kalang River near Urunga Numbaa Island, in the Shoalhaven River Payne's Island, in Wallaga Lake Peat Island, in the Hawkesbury River Pig Island, in the Shoalhaven River Pimlico Island, in Richmond River near Wardell Pinchgut - see Fort Denison, a former penal site and defensive facility in Sydney Harbour Pulbah Island, the largest island in Lake Macquarie Rawdon Island, in Hastings River downstream of Wauchope Reedy Island, in Tuross Lake Regatta Island, in Wallis Lake Rodd Island, a small island in Iron Cove, an arm of Port Jackson (Sydney Harbour) Sanctuary Island, in Narrabeen Lagoon Scotland Island, in Pittwater Shark Island, in Sydney Harbour Snapper Island, in Sydney Harbour Spectacle Island, in the Hawkesbury River Spectacle Island, in Sydney Harbour Solitary Islands North Solitary Island South Solitary Island Southwest Solitary Island Mid Solitary Island Split Solitary Island Stott's Island, in Tweed River at Tumbuulgum Stuart's Island, in Nambucca River at Bellwood Sultan's Island off coast 4 km north of Eden Susan Island, in Clarence River at Grafton Teribah Island, at The Entrance, Tuggerah Lake Tollgate Islands (2), in Bateman's Bay Ukerebagh Island, in Tweed River at South Tweed Heads Wallis Island, in Wallis Lake Wasp Island, the only island in Durras Inlet near Batemans Bay Wedding Cake Island, a small island off the coast of Coogee Windang Island, a small island at the entrance to Lake Illawarra Woodford Island, in the Clarence River immediately upstream of Maclean Yellow Rock Island, at junction of Bellinger and Kalang Rivers near Urunga Northern Territory