The Garden Island Naval Precinct is a heritage-listed naval base and defence precinct located at Cowper Wharf Roadway in the inner eastern Sydney neighbourhood of Garden Island in the City of Sydney local government area of New South Wales, Australia. The precinct was built from 1856. It includes the HMAS Kuttabul naval base, formerly known as HMAS Penguin. The property is owned by Australian Department of Defence. It was added to the Commonwealth Heritage List on 22 June 2004 and the New South Wales State Heritage Register on 12 November 2004.