| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| An Daingean | city | Offaly | Ireland | 53.30 | -7.29 | 278 | 1972 |
| An Daingean | city | Kerry | Ireland | 52.14 | -10.27 | 124 | 2664 |
| An Damhshraith | city | Cavan | Ireland | 54.19 | -8.02 | 223 | 517 |
| An Deargmhóin | city | Leitrim | Ireland | 54.23 | -8.07 | 830 | 417 |
| An Doire | city | Mayo | Ireland | 54.08 | -9.55 | 249 | 203 |
| An Doirin | city | Mayo | Ireland | 53.90 | -9.94 | 0 | 701 |
| An Doirin | city | Kerry | Ireland | 51.90 | -10.24 | 59 | 1779 |
| An Doirin | city | Galway | Ireland | 53.50 | -10.06 | 213 | 2078 |
| An Doirín | city | Kerry | Ireland | 51.92 | -10.01 | 830 | 211 |
| An Doirín | city | Galway | Ireland | 53.03 | -8.73 | 229 | 681 |
| An Doirín | city | Mayo | Ireland | 54.00 | -9.42 | 259 | 437 |
| An Droichead Nua | city | Kilkenny | Ireland | 52.63 | -6.99 | 101 | 2441 |
| An Droim | city | Donegal | Ireland | 55.06 | -7.52 | 0 | 1131 |
| An Droim | city | Mayo | Ireland | 54.18 | -10.08 | 3 | 719 |
| An Droim Fada | city | Sligo | Ireland | 54.41 | -8.47 | 32 | 1420 |
| An Droim Liath | city | Leitrim | Ireland | 54.02 | -7.73 | 246 | 1229 |
| An Droim Riabhach | city | Mayo | Ireland | 54.19 | -10.06 | 3 | 778 |
| An Drom | city | Kerry | Ireland | 52.03 | -9.98 | 236 | 903 |
| An Drom | city | Kerry | Ireland | 52.04 | -9.33 | 830 | 1599 |
| An Drom | city | Kerry | Ireland | 52.23 | -10.17 | 167 | 368 |
| An Drom Thoir | city | Kerry | Ireland | 52.02 | -9.90 | 206 | 784 |
| An Dromaid | city | Kerry | Ireland | 51.87 | -10.11 | 91 | 600 |
| An Dromainn | city | Cavan | Ireland | 53.90 | -7.18 | 830 | 2337 |
| An Dromainn | city | Laois | Ireland | 52.48 | -6.91 | 246 | 1561 |
| An Duchoraidh | city | Donegal | Ireland | 54.91 | -8.21 | 219 | 331 |
| An Dumhach Bheag | city | Mayo | Ireland | 53.88 | -9.81 | 0 | 313 |
| An Dumhaigh | city | Donegal | Ireland | 54.87 | -8.37 | 6 | 707 |
| An Díseart | city | An Iarmhi | Ireland | 53.47 | -7.45 | 337 | 1174 |
| An Díseart | city | An Iarmhi | Ireland | 53.60 | -7.14 | 406 | 1620 |
| An Díseart | city | Laois | Ireland | 53.02 | -7.23 | 830 | 5502 |
| An Díseart | city | Kildare | Ireland | 53.39 | -6.81 | 288 | 2436 |
| An Dúgharraí | city | Cavan | Ireland | 54.04 | -7.63 | 249 | 1084 |
| An Dún | city | Galway | Ireland | 53.38 | -9.25 | 190 | 1471 |
| An Dún Beag | city | Clare | Ireland | 52.73 | -9.52 | 3 | 984 |
| An Dún Meánach | city | Kerry | Ireland | 52.13 | -10.18 | 68 | 743 |
| An Dún Mór | city | Clare | Ireland | 52.73 | -9.57 | 3 | 776 |
| An Dúnán | city | Laois | Ireland | 52.86 | -7.13 | 830 | 2291 |