- Carrowgarriff
- Carrowkeel
- Carrowmanagh
- Carrowmore
- Carrowmoreknock
- Carrownamaddra
- Carrownrooaun
- Carrowreagh
- Cartron
- Cartrongarv
- Cashel
- Cashel
- Cashla
- Cashleen
- Castleblakeney
- Castlecreevy
- Castlegar
- Castlemoyle
- Ceantar na nOileán
- Chapel Island
- Cinn an Bhaile
- Claddagh
- Claddaghduff
- Claggan
- Claregalway
- Clarinbridge
- Cleggan
- Clifden
- Cloghalarhard
- Clogharevaun Bridge