The 2/43rd Battalion was an infantry battalion of the Australian Army. Raised in July 1940 in South Australia as part of the 24th Brigade, the unit saw service in the Middle East in 1941–42, taking part in the fighting at Tobruk and El Alamein before returning to Australia early in 1943. In 1943–44 they fought in New Guinea against the Japanese. Their final campaign was in Borneo in June 1945. Following the end of the war, the battalion was disbanded in February 1946.