22nd Construction Regiment, Royal Australian Engineers

The 22nd Construction Regiment is an Australian Army engineer unit. It is comprised predominantly of Australian Army Reserve soldiers, that are part-time, and it also has an Australian Regular Army (full-time) component staff. It is based in Victoria, Australia. Part of the 4th Brigade it provides engineer support to the 2nd Division. It is the Senior Engineer Regiment in the 2nd Division, and the second most Senior Engineer Regiment in the Australian Army after the 3rd Field Engineer Regiment (now known as the 3rd Combat Engineer Regiment).

It was originally raised in July 1950 as a unit of the "supplementary reserve", which was formed within the Citizens Military Force to utilise the personnel and resources of various civilian government organisations to raise a military construction capability. The regiment's first commanding officer was Lieutenant Colonel I.J. O'Donell and its first annual camp took place at Puckapunyal, with 20 officers and 220 other ranks taking part. Upon formation, the regiment consisted of the 104th, 105th and 106th Construction Squadrons and the 107th Plant Squadron (Heavy).

The Regiment currently consists of a regimental headquarters (RHQ), a works section and two construction squadrons. RHQ and 105th Construction Squadron are based at Oakleigh, Victoria, while the 39th Construction Squadron is based at Newborough in Gippsland, Victoria.

The Regiment has been providing construction and works support to nearly every Army Aboriginal Community Assistance Program (AACAP) task since the Federal Government directed these tasks to begin in 1997. The Regiment has also been involved in providing Defence Aid to the Civil Community since the 1960s, in particular supporting the emergency services and local communities in disaster response. Over the past 10 years the Regiment has led the ADF response to Victoria's bushfires, in particular the 2003 Alpine Fires, the 2006 Gippsland Fires, and in 2009 it was initially the lead element in the Black Saturday fires. Since the Regiment was raised it has deployed Army Reserve engineers to Papua New Guinea, South Vietnam, Bougainville, East Timor (Timor L'este), Solomon Islands and Afghanistan.

The current Commanding Officer is Lieutenant Colonel Darren Potter, CSC.