Cities — D
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- Daingean (L)
- Dalkey (L)
- Darndale (L)
- Derrinturn (L)
- Derrybeg (U)
- Dingle (M)
- Dollymount (L)
- Donabate (L)
- Donaghmede (L)
- Donegal (U)
- Donnybrook (L)
- Donnycarney (L)
- Douglas (M)
- Drogheda (L)
- Droichead Nua (L)
- Dromiskin (L)
- Drumcondra (L)
- Dublin (L)
- Duleek (L)
- Dún Laoghaire (L)
- Dunboyne (L)
- Dundalk (L)
- Dundrum (L)
- Dungarvan (M)
- Dungloe (U)
- Dunleer (L)
- Dunlewy (U)
- Dunmanway (M)
- Dunmore East (M)
- Dunshaughlin (L)