| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Claddagh | city | Galway | Ireland | 53.27 | -9.07 | 0 | 49906 |
| Claddagh | city | Sligo | Ireland | 54.02 | -8.91 | 183 | 893 |
| Claddaghduff | city | Galway | Ireland | 53.54 | -10.14 | 131 | 572 |
| Clady | city | Donegal | Ireland | 54.78 | -7.55 | 200 | 3362 |
| Clady Station | city | Donegal | Ireland | 54.78 | -7.55 | 200 | 3362 |
| Claggan | city | Donegal | Ireland | 55.23 | -6.98 | 830 | 2005 |
| Claggan | city | Donegal | Ireland | 55.20 | -8.00 | 295 | 689 |
| Claggan | city | Galway | Ireland | 53.50 | -9.50 | 206 | 589 |
| Claggan | city | Donegal | Ireland | 55.20 | -7.05 | 226 | 3045 |
| Claggan | city | Donegal | Ireland | 55.27 | -7.17 | 6 | 1683 |
| Claggan | city | Donegal | Ireland | 55.31 | -7.16 | 26 | 1490 |
| Claggan | city | Donegal | Ireland | 55.26 | -7.49 | 830 | 1211 |
| Claggan | city | Donegal | Ireland | 54.67 | -8.39 | 236 | 2087 |
| Claggan | city | Mayo | Ireland | 53.97 | -9.84 | 3 | 294 |
| Claggan | city | Mayo | Ireland | 53.84 | -9.61 | 3 | 806 |
| Claggan Lower | city | Donegal | Ireland | 55.20 | -8.00 | 295 | 689 |
| Claggan Upper | city | Donegal | Ireland | 55.20 | -8.00 | 295 | 689 |
| Claggarnagh | city | Mayo | Ireland | 53.82 | -9.38 | 275 | 1896 |
| Claggarnagh East | city | Mayo | Ireland | 53.93 | -9.48 | 183 | 888 |
| Claggarnagh West | city | Mayo | Ireland | 53.93 | -9.48 | 183 | 888 |
| Clahane | city | Kerry | Ireland | 52.23 | -9.70 | 830 | 18703 |
| Claire Mount | city | Meath | Ireland | 53.65 | -6.31 | 288 | 8508 |
| Clais Liam | city | Kilkenny | Ireland | 52.62 | -7.11 | 223 | 2414 |
| Clais Mhor | city | Ireland | 52.00 | -7.82 | 150 | 2131 | |
| Clamper Cross | city | Cork | Ireland | 52.20 | -9.18 | 898 | 1232 |
| Clane | city | Kildare | Ireland | 53.29 | -6.69 | 272 | 10227 |
| Claonachadh | city | Leitrim | Ireland | 54.06 | -7.78 | 249 | 1730 |
| Claonadh | city | Kildare | Ireland | 53.29 | -6.69 | 272 | 10227 |
| Clara | city | Offaly | Ireland | 53.34 | -7.61 | 232 | 4160 |
| Clara | city | Wicklow | Ireland | 52.97 | -6.26 | 383 | 2129 |
| Clara Bridge | city | Wicklow | Ireland | 52.95 | -6.25 | 357 | 2551 |
| Clarabricken | city | Kilkenny | Ireland | 52.66 | -7.15 | 305 | 2595 |
| Claragh | city | Donegal | Ireland | 55.03 | -7.69 | 177 | 4337 |
| Claragh | city | Donegal | Ireland | 55.30 | -7.34 | 380 | 1480 |
| Claragh | city | Cavan | Ireland | 54.09 | -7.28 | 249 | 1819 |
| Claragh Scotch | city | Sligo | Ireland | 54.12 | -8.65 | 259 | 871 |
| Clarahill | city | Laois | Ireland | 53.15 | -7.48 | 830 | 1063 |
| Clarbarracum | city | Laois | Ireland | 52.92 | -7.26 | 830 | 1347 |
| Clare | city | Clare | Ireland | 52.82 | -8.97 | 19 | 18325 |
| Clare | city | An Iarmhi | Ireland | 53.57 | -7.19 | 830 | 1375 |
| Clare Bridge | city | Ireland | 52.69 | -8.38 | 830 | 1994 | |
| Clarecastle | city | Clare | Ireland | 52.82 | -8.97 | 19 | 18325 |
| Clareen | city | Offaly | Ireland | 53.07 | -7.80 | 403 | 1001 |
| Clareen Bridge | city | Clare | Ireland | 52.77 | -9.02 | 78 | 3478 |
| Claregalway | city | Galway | Ireland | 53.34 | -8.95 | 42 | 6263 |
| Claremorris | city | Mayo | Ireland | 53.72 | -9.00 | 239 | 4251 |
| Clareville | city | Clare | Ireland | 53.12 | -9.13 | 183 | 660 |
| Clarina | city | Ireland | 52.63 | -8.73 | 19 | 12359 | |
| Clarinbridge | city | Galway | Ireland | 53.23 | -8.88 | 16 | 4057 |
| Clash | city | Kerry | Ireland | 52.22 | -10.30 | 830 | 1021 |
| Clash | city | Ireland | 52.87 | -8.03 | 830 | 1183 | |
| Clash North | city | Ireland | 52.45 | -9.24 | 830 | 1691 | |
| Clash South | city | Ireland | 52.44 | -9.23 | 830 | 1895 | |
| Clashadoo | city | Cork | Ireland | 51.64 | -9.55 | 246 | 950 |
| Clashanahy | city | Ireland | 51.96 | -7.79 | 3 | 2425 | |
| Clashaniska Mile Tree | city | Ireland | 52.38 | -7.72 | 200 | 17191 | |
| Clasharinka | city | Cork | Ireland | 51.91 | -8.04 | 137 | 2798 |
| Clashatrake Bridge | city | Cork | Ireland | 52.07 | -9.00 | 830 | 1983 |
| Clashavodig | city | Cork | Ireland | 51.89 | -8.34 | 0 | 19639 |
| Clashbane | city | Ireland | 52.57 | -8.43 | 226 | 2049 | |
| Clashbeg | city | Ireland | 52.54 | -7.51 | 341 | 1910 | |
| Clashdrumsmith | city | Ireland | 52.47 | -8.32 | 370 | 1844 | |
| Clashduff | city | Kilkenny | Ireland | 52.79 | -7.25 | 830 | 3033 |
| Clasheen Bridge | city | Kilkenny | Ireland | 52.60 | -7.36 | 347 | 1982 |
| Clashflugh Cross Roads | city | Cork | Ireland | 51.64 | -8.83 | 255 | 3013 |
| Clashganna | city | Carlow | Ireland | 52.55 | -6.90 | 249 | 2086 |
| Clashganna Bridge | city | Carlow | Ireland | 52.55 | -6.90 | 249 | 2086 |
| Clashganny | city | Ireland | 52.26 | -7.81 | 830 | 1376 | |
| Clashlehane Bridge | city | Kerry | Ireland | 52.26 | -9.67 | 183 | 19654 |
| Clashmore | city | Ireland | 52.00 | -7.82 | 150 | 2131 | |
| Clashmorgan | city | Cork | Ireland | 52.08 | -8.68 | 830 | 4321 |
| Clashnabrock | city | Cork | Ireland | 52.17 | -8.58 | 229 | 2574 |
| Clashnadarriv | city | Ireland | 52.11 | -7.81 | 141 | 1587 | |
| Clashnalochan | city | Ireland | 52.10 | -7.62 | 6 | 9981 | |
| Clashnugoneen | city | Ireland | 52.13 | -7.80 | 170 | 1563 | |
| Clashreagh | city | Cork | Ireland | 51.66 | -8.64 | 226 | 1317 |
| Clashroe | city | Ireland | 52.31 | -7.34 | 380 | 3703 | |
| Clashwilliam | city | Kilkenny | Ireland | 52.62 | -7.11 | 223 | 2414 |
| Clashygowan | city | Donegal | Ireland | 54.94 | -7.47 | 85 | 2879 |
| Classas | city | Cork | Ireland | 51.90 | -8.79 | 236 | 2819 |
| Claureen Bridge | city | Clare | Ireland | 52.85 | -9.00 | 88 | 22109 |
| Claí an Dá Mhíle | city | Galway | Ireland | 53.30 | -9.00 | 6 | 25318 |
| Claídeach | city | Galway | Ireland | 53.32 | -9.16 | 170 | 6116 |