Operative Bricklayers' Society
| Operative Bricklayers' Society | |
| Merged into | Amalgamated Union of Building Trade Workers | 
|---|---|
| Founded | 1818 | 
| Dissolved | 1921 | 
| Location | |
| Members | 38,830 (1900) | 
| Key people | George Howell | 
The Operative Bricklayers' Society (OBS) was a British New Model Trade Union based in London.