| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Congresbury | England | Somerset | Bristol | churchyard | Yes | Lost | View On Map |
| Contrières | France | Manche - Normandie | Coutances | churchyard | Yes | Notable | View On Map |
| Cookham Dean | England | Berkshire | Maidenhead | churchyard | Yes | Ancient 4m-5m | View On Map |
| Cooling | England | Kent | Rochester | churchyard | Yes | Notable | View On Map |
| Coombe Bissett | England | Wiltshire | Salisbury | churchyard | Yes | Notable | View On Map |
| Coppice Mawr – Chepstow | Wales | Monmouthshire | Chepstow | woodland | No | Notable | View On Map |
| Coreley | England | Shropshire | Tenbury Wells | hedge | No | Notable | View On Map |
| Corfe Mullen | England | Dorset | Poole | churchyard | Yes | Ancient 4m-5m | View On Map |
| Corhampton | England | Hampshire | Southampton | churchyard | Yes | Ancient 7m+ | View On Map |
| Corhampton / Droxford Parish Boundary | England | Hampshire | Bishop's Waltham | boundary | No | Notable | View On Map |
| Cormolain | France | Calvados - Normandie | Saint - Lô | churchyard | Yes | Ancient 4m-5m | View On Map |
| Cornwood | England | Devon | Plymouth | churchyard | Yes | Ancient 4m-5m | View On Map |
| Corsley | England | Wiltshire | Frome | churchyard | Yes | Lost | View On Map |
| Cottun | France | Calvados - Normandie | Bayeux | churchyard | Yes | Lost | View On Map |
| Coulonces | France | Calvados - Normandie | Vire | churchyard | Yes | Ancient 7m+, Notable | View On Map |
| Courson | France | Calvados - Normandie | Vire | churchyard | Yes | Ancient 5m-7m | View On Map |
| Cowbridge | Wales | Glamorgan | Bridgend | churchyard | Yes | Notable | View On Map |
| Cowdray Park | England | Sussex - West | Midhurst | parkland | Yes | Ancient 4m-5m | View On Map |
| Coxbench Hall | England | Derbyshire | Derby | garden | No | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Coychurch (Llangrallo) | Wales | Bridgend | Bridgend | churchyard | Yes | Notable | View On Map |