| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Dún | city | County Limerick | Ireland | 52.6036111 | -8.2444444 | 301 | 4463 |
| Dún An Ri | city | An Cabhan | Ireland | 53.9080556 | -6.8055556 | 298 | 3439 |
| Dún Ard | city | Cill Mhantain | Ireland | 53.0191667 | -6.6147222 | 859 | 4571 |
| Dún Canann | city | Loch Garman | Ireland | 52.2202778 | -6.9169444 | 9 | 2962 |
| Dún Chaoin | city | Ciarrai | Ireland | 52.1313889 | -10.4572222 | 229 | 1362 |
| Dún Cionnaola | city | County Donegal | Ireland | 54.6308333 | -8.3705556 | 3 | 1617 |
| Dún Damh | city | County Donegal | Ireland | 55.2666667 | -7.5 | 88 | 1318 |
| Dún Dealgan | city | County Louth | Ireland | 54 | -6.4166667 | 3 | 9809 |
| Dún Fionnachaidh | city | County Donegal | Ireland | 55.1833333 | -7.9666667 | 52 | 1383 |
| Dún Gar | city | Ros Comain | Ireland | 53.8666667 | -8.4 | 246 | 1840 |
| Dún Garbhán | city | Port Lairge | Ireland | 52.0880556 | -7.6252778 | 3 | 4240 |
| Dún Laoghaire | city | Baile Atha Cliath | Ireland | 53.2925 | -6.1286111 | 3 | 40100 |
| Dún Luáin | city | Cill Mhantain | Ireland | 53.0555556 | -6.7038889 | 521 | 5571 |
| Dún Léire | city | County Louth | Ireland | 53.835 | -6.3961111 | 144 | 9464 |
| Dún Lúiche | city | County Donegal | Ireland | 55.0166667 | -8.1 | 515 | 2304 |
| Dún Mánmhaí | city | Corcaigh | Ireland | 51.7166667 | -9.1166667 | 249 | 5233 |
| Dún Mór | city | Gaillimh | Ireland | 53.6166667 | -8.7333333 | 226 | 2843 |
| Dún Mór | city | Port Lairge | Ireland | 52.1513889 | -6.9861111 | 0 | 1436 |
| Dún Seachlainn | city | An Mhi | Ireland | 53.5125 | -6.54 | 282 | 4176 |
| Dún an Uchta | city | Gaillimh | Ireland | 53.1975 | -8.1325 | 223 | 2792 |
| Dún ar Aill | city | Corcaigh | Ireland | 52.2166667 | -8.5833333 | 269 | 5179 |
| Dún na Séad | city | Corcaigh | Ireland | 51.4833333 | -9.3666667 | 190 | 2413 |
| Dún na nGall | city | County Donegal | Ireland | 54.65 | -8.1166667 | 78 | 2115 |
| Dúras | city | Corcaigh | Ireland | 51.6166667 | -9.5333333 | 232 | 4818 |
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