From Pumsaint, Dyfed to all cities in Clwyd starting with letter C
- Cader, Dyfed
- Cadnant Park, Dyfed
- Cadney Bank, Dyfed
- Cadole, Dyfed
- Caer Estyn, Dyfed
- Caergwrle, Dyfed
- Caerhun, Dyfed
- Caerwys, Dyfed
- Calcoed, Dyfed
- Capel Curig, Dyfed
- Capel Garmon, Dyfed
- Capel Siloam, Dyfed
- Capelulo, Dyfed
- Carmel, Dyfed
- Carrog, Dyfed
- Castell, Dyfed
- Catch, Dyfed
- Cefn, Dyfed
- Cefn Berain, Dyfed
- Cefn brith, Dyfed
- Cefn bychan, Dyfed
- Cefn eurgain, Dyfed
- Cefn mawr, Dyfed
- Cefn y bedd, Dyfed
- Celyn Mali, Dyfed
- Cerrigydrudion, Dyfed
- Chirk, Dyfed
- Chirk Green, Dyfed
- Chweffordd, Dyfed
- Chwitffordd, Dyfed
- Cilcain, Dyfed
- Clawdd newydd, Dyfed
- Clawdd Poncen, Dyfed
- Clocaenog, Dyfed
- Cloy, Dyfed
- Cock Bank, Dyfed
- Coed talon, Dyfed
- Coedpoeth, Dyfed
- Colwyn Bay, Dyfed
- Connahs Quay, Dyfed
- Conwy, Dyfed
- Copenhagen, Dyfed
- Coppa View, Dyfed
- Corwen, Dyfed
- Crabtree Green, Dyfed
- Craig y Don, Dyfed
- Croes Eneurys, Dyfed
- Croes wian, Dyfed
- Cross Lanes, Dyfed
- Cumbers Bank, Dyfed
- Cwlach, Dyfed
- Cwm, Dyfed
- Cwm Penmachno, Dyfed
- Cyffylliog, Dyfed
- Cymau, Dyfed
- Cynwyd, Dyfed