| 21st Construction Engineer Regiment | |
|---|---|
&sq=Facebook&lang=en&file=File:091217-A-1843J-018.jpg) 21 CR personnel in Afghanistan, 2009 | |
| Active | 1950–2013 |
| Disbanded | 23 November 2013 |
| Country |  Australia |
| Branch | Army |
| Type | Royal Australian Engineers (RAE) |
| Role | Construction engineers |
| Part of | 5th Brigade, 2nd Division |
| Garrison/HQ | Holsworthy Barracks |
| Insignia | |
| Unit colour patch | &sq=Facebook&lang=en&file=File:21_Construction_Regiment_colour_patch.PNG) |
| Abbreviation | 21 CR |
The 21st Construction Regiment (21 CR) was a construction engineer regiment of the Australian Army Reserve. Part of the 5th Brigade, the regiment was formed in 1950 and was based in New South Wales where it provided support to the 2nd Division. The regiment has contributed personnel to a number of operations including the Regional Assistance Mission to the Solomon Islands, Operation Slipper and Operation Astute. It also regularly supported the Army Aboriginal Community Assistance Program and provided assistance to the Australian community in times of natural disaster. The regiment was disbanded in 2013.