Cardiganshire
| District | Successor |
|---|---|
| Aberaeron Rural District | Ceredigion |
| Aberaeron Urban District | Ceredigion |
| Aberystwyth Borough | Ceredigion |
| Aberystwyth Rural District | Ceredigion |
| Cardigan Borough | Ceredigion |
| Lampeter Borough | Ceredigion |
| New Quay Urban District | Ceredigion |
| Teifiside Rural District | Ceredigion |
| Tregaron Rural District | Ceredigion |
Read more about this topic: List Of Rural And Urban Districts In Wales In 1973