Balls Head Bay is a bay located to the west of the Waverton Peninsula and west of Balls Head and to the east of Berry Island, on the north of Sydney Harbour.
Previously known as Oyster Bay, Wollstonecraft Bay, Sugarworks Bay, Powder Works Bay and Kerosene Bay. The naval base HMAS Waterhen is located within the bay.
Ships were broken up and burnt to the waterline in the bay.
Coordinates: 33°51′S 151°12′E / 33.850°S 151.200°E