Trade unions
D
| Full Name | Short Name | Notes |
|---|---|---|
| Derbyshire Miners' Association | DeMA | |
| Dock, Wharf, Riverside and General Workers' Union | DWRGWU | |
| Draughtsmen's and Allied Technicians' Association | DATA | Formerly Association of Engineering and Shipbuilding Draughtsmen until 1960. In 1970, merged with the Amalgamated Union of Engineering and Foundry Workers and Constructional Engineering Union to form the Amalgamated Union of Engineering Workers. |
| Durham Colliery Mechanics' Association | DCMA | |
| Durham Miners' Association | DMA |