Major-General George "Gus" Brian Sinclair (21 July 192817 May 2020) was a British Army officer. After the Royal Military Academy Sandhurst Sinclair joined the Royal Engineers in 1948. He served in Korea during the aftermath of the Korean War and was quickly appointed adjutant of his regiment. Sinclair served as adjutant of the British garrison on Kiritimati for the Operation Grapple thermonuclear weapon tests. From 1969 he was Commander Royal Engineers Near East Land Forces, based at the Sovereign Base Areas of Akrotiri and Dhekelia and was responsible for recovering buildings from a British training base abandoned in the aftermath of the 1969 Libyan coup d'état.