HMAS Sydney (FFG 03) is an Adelaide class guided missile frigate of the Royal Australian Navy (RAN). The frigate one of six modified Oliver Hazard Perry-class frigates ordered from 1977 onwards, and the third of four to be constructed in the United States of America. Laid down and launched in 1980, Sydney was named for the capital city of New South Wales, and commissioned into the RAN in 1983.
During her operational history, Sydney has been involved in Australian responses to the 1987 Fijian coups d'état and the Bougainville uprising. The frigate has been deployed to the Persian Gulf on five occasions in support of United States operations during the Gulf War, War in Afghanistan, and the 2003 invasion of Iraq, and has completed at least two round-the-world voyages.
Sydney is expected to remain in service until 2013. The frigate will be replaced by a Hobart-class destroyer.