HMAS Darwin , named for the capital city of the Northern Territory, was an Adelaide-class guided-missile frigate, formerly in service with the Royal Australian Navy (RAN). One of four ships ordered from the United States, Darwin entered service in 1984. During her career, she has operated in the Persian Gulf, as part of the INTERFET peacekeeping taskforce, and off the Solomon Islands. The frigate underwent a major upgrade during 2007 and 2008. She was decommissioned on 9 December 2017 and was supposed to be scuttled as a dive wreck in Tasmania, but the deal was pulled by the Tasmanian Government and her fate remains uncertain.

The Adelaide class of six guided missile frigates was constructed in Australia and the United States for service in the Royal Australian Navy. Two were later sold to the Chilean Navy. The Adelaide class was based on the United States Navy's Oliver Hazard Perry-class frigates, but modified for Australian requirements. The first four vessels were built in the United States, and the final two were constructed in Australia. The first ship entered service in November 1980.