| Name | Type |
|---|---|
| Cornwall Volume II (1966) | Guidebook |
| Cornwall-West Penwith (1984) | Guidebook |
| Craig Lundie - Rock Climbing Guide (2020) | Guidebook |
| Craig Yr Ysfa Interim Guide (1943) | Guidebook |
| Craig y Longridge (2017) | Guidebook |
| Creag Dhubh na Caillich Dry Tooling Miniguide (2023) | Guidebook |
| Culver Cliff Climbs | Guidebook |
| Culver Cliff, Isle of Wight (2021) | Guidebook |
| Cwm Crafnant (2008) | Guidebook |
| Cwm Glas (1970) | Guidebook |
| Cwm Idwal (1967) | Guidebook |
| Cwm Idwal (1936) | Guidebook |
| Cwm Idwal (1974) | Guidebook |
| Cwm Idwal (1958) | Guidebook |
| Cwm Idwal (Revision of 1958) (1964) | Guidebook |
| Cwm Idwal I (1949 reprint) (1940) | Guidebook |
| Cwm Silyn & Cwellyn (1971) | Guidebook |
| Cwm Silyn & Tremadoc Interim Guide (1955) | Guidebook |
| Darren Cruglwyn | Guidebook |
| Dartmoor Miscellany | Guidebook |