| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Dalkey | city | Baile Atha Cliath | Ireland | 53.2783333 | -6.1002778 | 0 | 35294 |
| Dallyhaysy | city | Baile Atha Cliath | Ireland | 53.6008333 | -6.2313889 | 154 | 68993 |
| Damastown | city | Baile Atha Cliath | Ireland | 53.5558333 | -6.3047222 | 295 | 75887 |
| Dardistown | city | Baile Atha Cliath | Ireland | 53.4166667 | -6.2383333 | 52 | 101370 |
| Deans Grange | city | Baile Atha Cliath | Ireland | 53.2816667 | -6.1677778 | 75 | 84907 |
| Deilginis | city | Baile Atha Cliath | Ireland | 53.2783333 | -6.1002778 | 0 | 35294 |
| Dermotstown | city | Baile Atha Cliath | Ireland | 53.59 | -6.2241667 | 190 | 68993 |
| Dollymount | city | Baile Atha Cliath | Ireland | 53.3644444 | -6.1691667 | 0 | 65467 |
| Dolphin's Barn | city | Baile Atha Cliath | Ireland | 53.3341667 | -6.3213889 | 127 | 102936 |
| Dolphinʼs Barn | city | Baile Atha Cliath | Ireland | 53.3341667 | -6.3213889 | 127 | 102936 |
| Domhnach Bat | city | Baile Atha Cliath | Ireland | 53.4872222 | -6.1519444 | 3 | 71300 |
| Donabate | city | Baile Atha Cliath | Ireland | 53.4872222 | -6.1519444 | 3 | 71300 |
| Donnybrook | city | Baile Atha Cliath | Ireland | 53.3211111 | -6.2152778 | 3 | 88981 |
| Drisnoge | city | Baile Atha Cliath | Ireland | 53.51 | -6.2938889 | 121 | 93318 |
| Drumcondra | city | Baile Atha Cliath | Ireland | 53.3711111 | -6.2508333 | 6 | 101267 |
| Drumleck | city | Baile Atha Cliath | Ireland | 53.3636111 | -6.0827778 | 0 | 11047 |
| Dublin | city | Baile Atha Cliath | Ireland | 53.3330556 | -6.2488889 | 29 | 88981 |
| Dun Laoghaire | city | Baile Atha Cliath | Ireland | 53.2925 | -6.1286111 | 3 | 40100 |
| Dundrum | city | Baile Atha Cliath | Ireland | 53.2922222 | -6.2669444 | 246 | 102164 |
| Dunleary | city | Baile Atha Cliath | Ireland | 53.2925 | -6.1286111 | 3 | 40100 |
| Dún Laoghaire | city | Baile Atha Cliath | Ireland | 53.2925 | -6.1286111 | 3 | 40100 |
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