D
- (Mayo County) Derryribbeen
- (Mayo County) Derrintloura
- (Mayo County) Drumilra
- (Mayo County) Deerpark
- (Mayo County) Drumneen
- (Mayo County) Drumneen
- (Mayo County) Derryoran
- (Mayo County) Doonamona
- (Mayo County) Derrycoeraun
- (Mayo County) Derrartan
- (Mayo County) Drumadoon
- (Mayo County) Derrylea
- (Mayo County) Dereenmanus
- (Mayo County) Darrylahan
- (Mayo County) Demesne
- (Mayo County) Drumdoogh
- (Mayo County) Doogary
- (Mayo County) Drumhuskert
- (Mayo County) Derryhick
- (Mayo County) Derreenyanimna
- (Mayo County) Derryvulcaun
- (Mayo County) Derrygaury
- (Mayo County) Deerpark West
- (Mayo County) Derrynanaff
- (Mayo County) Derrynagran
- (Mayo County) Doogary
- (Mayo County) Derrygarve
- (Mayo County) Derrynaraw
- (Mayo County) Doonbreedla Mountain
- (Mayo County) Drumscoba