The Joint Chemical, Biological, Radiological and Nuclear Regiment was a specialist expeditionary unit of the British armed forces.

Personnel of the Joint CBRN Regiment were trained in the detection, identification and monitoring of nuclear, biological and chemical weapons.

[1] Following the 1998 Strategic Defence Review, the NBC role was transferred to a newly formed joint regiment consisting of units from both the British Army and Royal Air Force.

Formed on 1 April 1999[2] as the Joint NBC Regiment, from a stated recommendation in the Strategic Defence Review for an operational unit to support deployed forces of the British military in NBC defence and assistance.

It was disbanded on 16 Dec 2011[7] as a result of the 2010 UK Strategic Defence and Security Review, with capabilities being transferred into the newly formed Defence CBRN Wing, formed by 26 and 27 Sqns RAF Regiment and 2623 Sqn RAuxAF Regiment.