The Northumberland Hussars was a Yeomanry regiment of the British Army, transferred to the Royal Artillery for the duration of the Second World War. It was disbanded as an independent Territorial Army unit in 1967, a time when the strength of the Territorial Army was greatly reduced. The regiment's name lives on in the title of the command and support squadron of the Queen's Own Yeomanry (QOY), a Formation Reconnaissance Regiment based in Newcastle upon Tyne.

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.