| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| An Clachan Aillseach | city | Highland | United Kingdom | 57.27 | -5.58 | 0 | 0 |
| An Cladach | city | Galway | Ireland | 53.27 | -9.07 | 0 | 49906 |
| An Cladach | city | Sligo | Ireland | 54.02 | -8.91 | 183 | 893 |
| An Cladan | city | Kerry | Ireland | 52.20 | -9.51 | 223 | 3048 |
| An Clochan | city | Kerry | Ireland | 52.24 | -10.19 | 13 | 403 |
| An Clochan | city | Donegal | Ireland | 54.84 | -7.93 | 321 | 598 |
| An Clochan | city | Offaly | Ireland | 53.22 | -7.88 | 249 | 1552 |
| An Clochan | city | Galway | Ireland | 53.48 | -10.02 | 167 | 2173 |
| An Clochan | city | Kerry | Ireland | 52.47 | -9.70 | 95 | 2906 |
| An Clochar | city | Mayo | Ireland | 54.13 | -10.09 | 0 | 667 |
| An Clochar | city | Mayo | Ireland | 53.84 | -9.47 | 206 | 3718 |
| An Clochar | city | Mayo | Ireland | 53.75 | -9.23 | 160 | 1452 |
| An Clochán Liath | city | Donegal | Ireland | 54.95 | -8.36 | 830 | 2721 |
| An Clocich Mhoir | city | Mayo | Ireland | 53.87 | -9.95 | 0 | 399 |
| An Cloichin | city | Ireland | 52.28 | -7.99 | 272 | 1006 | |
| An Cloichreán | city | An Iarmhi | Ireland | 53.64 | -6.98 | 334 | 2078 |
| An Cloigeann | city | Galway | Ireland | 53.55 | -10.12 | 203 | 724 |
| An Cloigeann | city | Galway | Ireland | 53.50 | -9.50 | 206 | 589 |
| An Cloigeann | city | Mayo | Ireland | 53.97 | -9.84 | 3 | 294 |
| An Cluainín | city | Mayo | Ireland | 54.26 | -10.01 | 177 | 1585 |
| An Clár | city | Armagh, Banbridge and Craigavon | United Kingdom | 54.38 | -6.33 | 226 | 18897 |