No. 84 Squadron was a Royal Australian Air Force (RAAF) fighter squadron of World War II. It was established in February 1943 and was part of the defences of the Torres Strait area from April 1943 until May the next year. After being withdrawn from the Torres Strait the squadron was reduced to a cadre until May 1945, when it began to receive new aircraft. No. 84 Squadron was disbanded in January 1946.