- Cainscross
- Cam
- Cam, Lower - see Cam
- Cerney Wick - see South Cerney
- Cerneys, The
- Chaceley
- Chalford
- Charfield
- Charlton Abbots
- Charlton Kings
- Chavenage
- Chedworth
- Cheltenham
- Cherington
- Childs Wickham
- Chipping Campden
- Chipping Sodbury
- Churcham
- Churchdown
- Cinderford
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- Cirencester
- Clapton on the Hill
- Clearwell
- Clifford Chambers
- Clifton (Bristol)
- Coaley
- Coates
- Coberley
- Cold Ashton
- Cold Aston - see Aston Blank
- Coleford
- Colesbourne
- Coln Rogers
- Coln St Aldwyn
- Coln St Dennis
- Compton Abdale
- Compton Greenfield
- Compton, Little - see Little Compton
- Condicote
- Corse
- Cow Honeybourne - see Honeybourne
- Cowley
- Cranham
- Cromhall
- Cutsdean
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