| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cluain | city | Cork | Ireland | 51.86 | -8.12 | 249 | 4076 |
| Cluain Aodha | city | Meath | Ireland | 53.41 | -6.44 | 216 | 45300 |
| Cluain Aoibh | city | Galway | Ireland | 53.33 | -9.14 | 42 | 7047 |
| Cluain Aoibhinn | city | Wexford | Ireland | 52.56 | -6.23 | 9 | 1296 |
| Cluain Ard | city | Kilkenny | Ireland | 52.61 | -7.38 | 830 | 1382 |
| Cluain Ard Beag | city | Wexford | Ireland | 52.33 | -6.49 | 150 | 21542 |
| Cluain Bolg | city | Offaly | Ireland | 53.26 | -7.09 | 249 | 1005 |
| Cluain Brón | city | Offaly | Ireland | 53.26 | -7.07 | 255 | 1198 |
| Cluain Buíochair | city | Leitrim | Ireland | 54.03 | -7.70 | 252 | 1198 |
| Cluain Bó | city | Galway | Ireland | 53.38 | -9.01 | 68 | 3593 |
| Cluain Bú | city | Galway | Ireland | 53.38 | -9.01 | 68 | 3593 |
| Cluain Canann | city | Offaly | Ireland | 53.32 | -7.05 | 301 | 5952 |
| Cluain Caoin | city | Wexford | Ireland | 52.29 | -6.76 | 72 | 2253 |
| Cluain Caoin | city | Laois | Ireland | 53.01 | -7.36 | 830 | 4497 |
| Cluain Catha | city | Roscommon | Ireland | 53.70 | -8.10 | 295 | 1122 |
| Cluain Ceann | city | Roscommon | Ireland | 53.78 | -8.67 | 308 | 943 |
| Cluain Cearbán | city | Mayo | Ireland | 53.77 | -9.82 | 36 | 734 |
| Cluain Chat | city | Meath | Ireland | 53.68 | -6.96 | 321 | 1797 |
| Cluain Coinín | city | Clare | Ireland | 52.59 | -9.76 | 3 | 490 |
| Cluain Críon | city | Offaly | Ireland | 53.27 | -7.12 | 252 | 1115 |
| Cluain Cuas | city | Clare | Ireland | 53.01 | -9.08 | 830 | 663 |
| Cluain Cuas | city | Leitrim | Ireland | 54.03 | -7.67 | 252 | 1151 |
| Cluain Damh | city | Mayo | Ireland | 53.94 | -9.44 | 157 | 608 |
| Cluain Dearg | city | Laois | Ireland | 53.05 | -7.38 | 830 | 1647 |
| Cluain Deirg | city | Offaly | Ireland | 53.34 | -7.89 | 305 | 1243 |
| Cluain Dolcain | city | South Dublin | Ireland | 53.32 | -6.40 | 229 | 159602 |
| Cluain Duibh | city | Galway | Ireland | 53.33 | -9.14 | 42 | 7047 |
| Cluain Dá Bhó | city | Offaly | Ireland | 53.26 | -7.15 | 259 | 1088 |
| Cluain Dá Lára | city | Offaly | Ireland | 53.27 | -7.99 | 180 | 904 |
| Cluain Dá Ráth | city | Ireland | 53.73 | -7.92 | 219 | 1250 | |
| Cluain Dáith | city | Wexford | Ireland | 52.52 | -6.45 | 249 | 1870 |
| Cluain Dúloiscthe | city | Kildare | Ireland | 53.17 | -7.14 | 252 | 4518 |
| Cluain Earna | city | An Iarmhi | Ireland | 53.63 | -7.07 | 354 | 1471 |
| Cluain Eascrach | city | Galway | Ireland | 53.28 | -8.20 | 223 | 4285 |
| Cluain Easlán | city | Mayo | Ireland | 54.09 | -9.11 | 127 | 8742 |
| Cluain Eois | city | Monaghan | Ireland | 54.18 | -7.23 | 242 | 4110 |
| Cluain Fada | city | Roscommon | Ireland | 53.68 | -8.73 | 265 | 1444 |
| Cluain Fada | city | Mayo | Ireland | 54.18 | -9.25 | 98 | 1676 |
| Cluain Fearta | city | Galway | Ireland | 53.24 | -8.06 | 193 | 713 |
| Cluain Finnis | city | Mayo | Ireland | 53.99 | -8.88 | 190 | 1680 |
| Cluain Fionnáin | city | Mayo | Ireland | 53.95 | -8.98 | 157 | 2871 |
| Cluain Fionnáin | city | Meath | Ireland | 53.75 | -6.94 | 242 | 3056 |
| Cluain Fobhair | city | Roscommon | Ireland | 53.80 | -8.60 | 229 | 999 |
| Cluain Gearóid | city | Offaly | Ireland | 53.27 | -7.13 | 255 | 1134 |
| Cluain Ghil | city | Meath | Ireland | 53.73 | -6.75 | 209 | 2054 |
| Cluain Iomaire | city | Kilkenny | Ireland | 52.47 | -7.02 | 370 | 1187 |
| Cluain Iongan | city | Sligo | Ireland | 54.02 | -8.80 | 209 | 1410 |
| Cluain Lara | city | Clare | Ireland | 52.72 | -8.55 | 121 | 6747 |
| Cluain Leac | city | Offaly | Ireland | 53.33 | -7.19 | 367 | 1713 |
| Cluain Leamhchoille | city | Sligo | Ireland | 53.98 | -8.82 | 232 | 1673 |
| Cluain Leannáin | city | Galway | Ireland | 53.39 | -9.03 | 72 | 3119 |
| Cluain Maine | city | Donegal | Ireland | 55.27 | -7.42 | 190 | 1704 |
| Cluain Maoiláin Beag | city | Galway | Ireland | 53.06 | -8.31 | 180 | 792 |
| Cluain Maoiláin Mór | city | Galway | Ireland | 53.06 | -8.31 | 180 | 792 |
| Cluain Meala | city | Tipperary | Ireland | 52.35 | -7.70 | 114 | 17059 |
| Cluain Mhic Adáin | city | Meath | Ireland | 53.67 | -6.69 | 157 | 18551 |
| Cluain Mhic Cuinn | city | Leitrim | Ireland | 54.28 | -8.21 | 206 | 1421 |
| Cluain Mhic Nóis | city | Offaly | Ireland | 53.33 | -7.98 | 193 | 1216 |
| Cluain Mhór | city | Lu | Ireland | 53.84 | -6.34 | 157 | 3432 |
| Cluain Mnic Nois | city | Offaly | Ireland | 53.33 | -7.98 | 193 | 1216 |
| Cluain Mín Thiar | city | Mayo | Ireland | 53.96 | -8.75 | 830 | 1596 |
| Cluain Mór | city | Mayo | Ireland | 53.98 | -8.72 | 314 | 1511 |
| Cluain Mór | city | Galway | Ireland | 53.41 | -9.16 | 45 | 2040 |
| Cluain Mór | city | Offaly | Ireland | 53.39 | -7.13 | 377 | 1651 |
| Cluain Mór | city | Offaly | Ireland | 53.27 | -7.38 | 252 | 1653 |
| Cluain Raithní | city | Wexford | Ireland | 52.73 | -6.17 | 0 | 2337 |
| Cluain Saileach | city | Fingal | Ireland | 53.38 | -6.42 | 131 | 108448 |
| Cluain Searrach | city | Kerry | Ireland | 52.25 | -10.18 | 68 | 340 |
| Cluain Sosta Íochtarach | city | Offaly | Ireland | 53.21 | -7.15 | 255 | 1865 |
| Cluain Tarbh | city | Dublin | Ireland | 53.36 | -6.22 | 3 | 231843 |
| Cluain Tuaiscirt | city | Roscommon | Ireland | 53.70 | -8.00 | 203 | 1412 |
| Cluain Uí Chuinn | city | Offaly | Ireland | 53.17 | -7.29 | 308 | 1397 |
| Cluain Uí Ghliasáin | city | Clare | Ireland | 52.63 | -9.44 | 3 | 4075 |
| Cluain an Ghaill | city | Meath | Ireland | 53.73 | -6.75 | 209 | 2054 |
| Cluain an Róistigh | city | Wexford | Ireland | 52.45 | -6.71 | 249 | 2320 |
| Cluain gCuanach | city | Sligo | Ireland | 54.02 | -8.87 | 180 | 1117 |
| Cluain na Binne | city | Galway | Ireland | 53.37 | -9.19 | 121 | 2507 |
| Cluain na Cúile | city | Sligo | Ireland | 54.10 | -8.78 | 219 | 945 |
| Cluain na Manach Uachtarach | city | Wexford | Ireland | 52.70 | -6.43 | 830 | 1803 |
| Cluain na Saoi | city | Galway | Ireland | 53.13 | -8.95 | 65 | 1545 |
| Cluain na Slí | city | Laois | Ireland | 53.15 | -7.52 | 830 | 1154 |
| Cluain na nGall | city | Carlow | Ireland | 52.69 | -6.65 | 249 | 3082 |
| Cluain na nGamhan | city | Offaly | Ireland | 53.19 | -7.28 | 301 | 1301 |
| Cluain Ún | city | Galway | Ireland | 53.04 | -8.33 | 200 | 750 |
| Cluaine | city | Kildare | Ireland | 53.06 | -7.05 | 216 | 2093 |
| Cluainín | city | Leitrim | Ireland | 54.31 | -8.18 | 229 | 1793 |
| Clubhouse Cross Roads | city | Cork | Ireland | 51.71 | -9.07 | 249 | 2519 |
| Cluddaun | city | Mayo | Ireland | 54.21 | -9.51 | 830 | 168 |
| Cluid | city | Sligo | Ireland | 54.11 | -8.54 | 249 | 2083 |