HMAS Cairns (naval base)

HMAS Cairns is a Royal Australian Navy (RAN) base located adjacent to the Trinity Inlet on the shore of Trinity Bay in Cairns, Queensland, Australia. Although used regularly as a port-of-call since before World War II, a permanent RAN presence was not established until 1971, when a maintenance and support base for patrol boats was set up. The base was formally commissioned in 1971 as a minor war vessel base. The current commander of the base is Commander David Hannah, RAN.

HMAS Cairns is responsible for all Australian naval activity off north-eastern Australia, and is the home base for one Armidale class patrol boat, two Cape class patrol boats and the ships of the Royal Australian Navy Hydrographic Service.