| Parish Name | Type of Parish | Duration | Notes
|
| Betws | Parish (ancient), Civil parish | 1935-1974 |
|
| Caeo | Parish (ancient), Civil parish | 1935-1974 |
|
| Cil Y Cwm | Parish (ancient), Civil parish | 1935-1974 |
|
| Cwarter Bach | Hamlet, Township, Civil parish | 1935-1974 |
|
| Llan Y Crwys | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanddeusant | Parish (ancient), Civil parish | 1935-1974 |
|
| Llandeilo Fawr Rural | Civil parish | 1935-1974 |
|
| Llandingad Without | Civil parish | 1935-1974 |
|
| Llandybie | Parish (ancient), Civil parish | 1935-1974 |
|
| Llandyfeisant | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanegwad | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanfair Ar Bryn | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanfihangel Aberbythych | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanfynydd | Parish (ancient), Civil parish | 1935-1974 |
|
| Llangadog | Parish (ancient), Civil parish | 1935-1974 |
|
| Llangathen | Parish (ancient), Civil parish | 1935-1974 |
|
| Llansadwrn | Parish (ancient), Civil parish | 1935-1974 |
|
| Llansawel | Parish (ancient), Civil parish | 1935-1974 |
|
| Llanwrda | Parish (ancient), Civil parish | 1935-1974 |
|
| Myddfai | Parish (ancient), Civil parish | 1935-1974 |
|
| Talyllychau | Parish (ancient), Civil parish | 1935-1974 |
|
