| Name | Country | 14C dates | |
|---|---|---|---|
|
581-600 / 735 show all | |||
| Derry | Ireland | 0 | Show |
| Derbyshire | England | 0 | Show |
| Derbyshire | United Kingdom | 0 | Show |
| Denbighshire | Wales | 0 | Show |
| Ḏamār | Yemen | 0 | Show |
| Dalarna | Sweden | 9 | Show |
| Cymru | United Kingdom | 3 | Show |
| Cuneo | Italy | 0 | Show |
| Cumbria | United Kingdom | 3 | Show |
| Csongrád | Hungary | 12 | Show |
| Crete | Greece | 22 | Show |
| Craigavon | Northern Ireland | 0 | Show |
| Cornwall | United Kingdom | 2 | Show |
| Cornwall | England | 0 | Show |
| Cork | Ireland | 137 | Show |
| Córdoba | Spain | 0 | Show |
| Conwy | Wales | 0 | Show |
| Constanţa | Romania | 2 | Show |
| Connacht | Ireland | 0 | Show |
| Coleraine | Northern Ireland | 0 | Show |
