The Royal Tank Regiment (RTR) is an armoured regiment of the British Army. It was formerly known as the Tank Corps and the Royal Tank Corps. It is part of the Royal Armoured Corps and is made up of two operational regiments, the 1st Royal Tank Regiment (1RTR) and the 2nd Royal Tank Regiment (2RTR). The official regimental motto is Fear Naught while unofficial motto (signified also by the colours of the tactical recognition flash) is "From Mud, Through Blood to the Green Fields Beyond."

Machine Gun Corps 1st Royal Tank Regiment 2nd Royal Tank Regiment 3rd Royal Tank Regiment 4th Royal Tank Regiment 5th Royal Tank Regiment 6th Royal Tank Regiment 7th Royal Tank Regiment 8th Royal Tank Regiment 9th Royal Tank Regiment 10th Royal Tank Regiment 40th Royal Tank Regiment 41st (Oldham) RTR