- Doon Hill
- Doonaun
- Doonguddle
- Doonloughan
- Dooveher
- Doughiska
- Drimmavohaun
- Drimmeen
- Drin
- Drinagh
- Drishaghaun
- Druinacoo
- Drumalegaun
- Drumatober
- Drumgriffin
- Drumkeary
- Duck Island
- Dundoogan
- Dunmore
- Dark Valley
- Dawn of Hope Bridge
- Defner
- Dergvone
- Dernahelty Beg
- Dernahelty More
- Derradda
- Derrinaher
- Derrinkip
- Derrintober
- Derrinvoney