The 49th Royal Tank Regiment (49 RTR) was an armoured regiment of the British Army during the Second World War. It was part of the Royal Tank Regiment, itself part of the Royal Armoured Corps.
It was originally formed as a duplicate of the 43rd (6th (City) Battalion, The Royal Northumberland Fusiliers) Royal Tank Regiment, a newly mobilised Territorial Army unit.
It was subsequently added to the 79th Armoured Division for the invasion of Normandy.