| Montgomeryshire Yeomanry | |
|---|---|
.jpg) Insignia of the Montgomeryshire Yeomanry | |
| Active | August 1803–March 1828 13 January 1831 – 20 September 1920 |
| Country |  United Kingdom |
| Branch |  Territorial Force |
| Type | Yeomanry Cavalry Infantry Bicycle infantry |
| Size | Boer War Four Companies World War One Three Regiments |
| Motto(s) | Anorchfygol ('Unconquered')[1][2] |
| Engagements | Chartist riots Second Battle of Gaza Third Battle of Gaza Battle of Beersheba Battle of Epehy |
| Commanders | |
| Notable commanders | Lt-Col Charles Watkin Williams-Wynn Lt-Col Sir Watkin Williams-Wynn, 6th Baronet Lt-Col Sir Herbert Williams-Wynn, 7th Baronet |
The Montgomeryshire Yeomanry was a Welsh auxiliary unit of the British Army first formed in 1803. It served in home defence and for internal security, including deployments to deal with Chartist disturbances in the 1830s. It provided volunteers to the Imperial Yeomanry during the Second Boer War and formed three regiments for service during World War I. It was broken up and converted to infantry and artillery in 1920.