The 2/4th Armoured Regiment was an armoured regiment of the Australian Army, which served during World War II. The regiment was formed in November 1942 as part of the Second Australian Imperial Force by amalgamating a number of previously existing armoured units and was disbanded in September 1946 after seeing action in New Guinea and Bougainville Island, where it provided individual squadron-group sized elements which operated in support of infantry operations against the Japanese. During its service the regiment received 10 battle honours.