The Corps of Royal Engineers, usually just called the Royal Engineers (RE), and commonly known as the Sappers, is one of the corps of the British Army.

It provides military engineering and other technical support to the British Armed Forces and is headed by the Chief Royal Engineer. The Regimental Headquarters and the Royal School of Military Engineering are in Chatham in Kent, England. The corps is divided into several regiments, barracked at various places in the United Kingdom of Great Britain and Northern Ireland and Germany.