| O Group Green Jackets Brigade | |
|---|---|
| Active | 1946–1966 |
| Country |  United Kingdom |
| Branch |  British Army |
| Type | Administrative |
| Garrison/HQ | Upper Barracks, Winchester |
| Commanders | |
| Representative Colonel | FM Sir Francis Festing (from 1963) |
The Green Jackets Brigade (known as O Group until 1948) was an administrative brigade of the British Army from 1946 to 1966 , that administered the English rifle regiments.