The Sherwood Rangers Yeomanry (SRY) was a British Yeomanry regiment. In 1967 it was amalgamated with other units to form the Royal Yeomanry (RY), a light cavalry regiment of the Army Reserve. Originally raised as the Nottinghamshire Yeomanry Cavalry in 1794, the regiment was used on several occasions in the 19th Century to maintain law and order. During the Second Boer War and both World Wars the regiment earned 44 battle honours. It is now one of the six squadrons of the Royal Yeomanry (RY), a light cavalry regiment of the Army Reserve. Designated as 'A' Squadron, the Sherwood Rangers Yeomanry's current role is to support the Light Cavalry Regiments on operations by providing reconnaissance soldiers.

Yeomanry is a designation used by a number of units and sub-units in the British Army Reserve which are descended from volunteer cavalry regiments that now serve in a variety of different roles.