| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cathaganstown | city | Ireland | 52.55 | -7.71 | 830 | 1753 | |
| Cathair Bo Sine | city | Kerry | Ireland | 52.15 | -10.34 | 219 | 1584 |
| Cathair Boilg | city | Kerry | Ireland | 52.12 | -10.40 | 170 | 870 |
| Cathair Cheannabháin | city | Clare | Ireland | 52.71 | -9.37 | 111 | 1396 |
| Cathair Chinn Lis | city | Ireland | 52.59 | -8.47 | 374 | 2829 | |
| Cathair Chonaill | city | Clare | Ireland | 53.04 | -9.15 | 830 | 407 |
| Cathair Donall | city | Kerry | Ireland | 51.77 | -10.10 | 52 | 529 |
| Cathair Léin | city | Clare | Ireland | 52.74 | -9.57 | 3 | 663 |
| Cathair Mhic Neachtain | city | Clare | Ireland | 53.05 | -9.19 | 830 | 446 |
| Cathair Oirealláin | city | Galway | Ireland | 53.10 | -8.95 | 124 | 1281 |
| Cathair Saidhbhin | city | Kerry | Ireland | 51.95 | -10.22 | 259 | 1947 |
| Cathair Seircín | city | Clare | Ireland | 52.95 | -9.23 | 351 | 1651 |
| Cathair Uí Mhaighin | city | Galway | Ireland | 53.28 | -8.90 | 45 | 6143 |
| Cathair Uí Mhóráin | city | Kerry | Ireland | 52.25 | -9.73 | 265 | 22147 |
| Cathair na Gaoithe | city | Kerry | Ireland | 51.78 | -10.15 | 830 | 507 |
| Cathair na Mart | city | Mayo | Ireland | 53.80 | -9.52 | 380 | 8062 |
| Cathole Bridge | city | Laois | Ireland | 53.09 | -7.44 | 830 | 1121 |
| Catstown | city | Kilkenny | Ireland | 52.44 | -7.26 | 830 | 1493 |
| Catto's Cross Roads | city | Kildare | Ireland | 52.97 | -7.02 | 219 | 7689 |
| Catto’s Cross Roads | city | Kildare | Ireland | 52.97 | -7.02 | 219 | 7689 |