1st South Western Mounted Brigade
| 1st South Western Mounted Brigade | |
|---|---|
| Active | 1908–1915 |
| Country | United Kingdom |
| Branch | British Army |
| Type | Yeomanry |
| Size | Brigade |
| peacetime HQ | Salisbury |
| Engagements | World War I |
| Commanders | |
| Notable commanders | Anthony Ashley-Cooper, 9th Earl of Shaftesbury |
The 1st South Western Mounted Brigade was a formation of the Territorial Force of the British Army, organised in 1908. By 1915 its regiments had been posted away so it was broken up; it never saw active service as a brigade. The Headquarters may have formed the HQ for 2/1st Southern Mounted Brigade.