| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Bigstone | city | Cill Dara | Ireland | 52.9038889 | -6.7558333 | 439 | 5786 |
| Bilboa | city | County Carlow | Ireland | 52.7966667 | -7.0380556 | 1013 | 3388 |
| Billa | city | Sligeach | Ireland | 54.1755556 | -8.5569444 | 226 | 2372 |
| Billis | city | County Monaghan | Ireland | 54.2944444 | -6.9311111 | 232 | 3542 |
| Binalt | city | County Donegal | Ireland | 55.0708333 | -7.5297222 | 0 | 1183 |
| Binbane | city | An Cabhan | Ireland | 54.0130556 | -7.12 | 557 | 2422 |
| Binghamstown | city | Maigh Eo | Ireland | 54.2038889 | -10.0361111 | 3 | 792 |
| Binkeeragh | city | An Cabhan | Ireland | 54.1830556 | -7.7488889 | 452 | 2528 |
| Binn Eadair | city | Baile Atha Cliath | Ireland | 53.3877778 | -6.0652778 | 3 | 13608 |
| Binn Éadair | city | Baile Atha Cliath | Ireland | 53.3877778 | -6.0652778 | 3 | 13608 |
| Biorra | city | County Offaly | Ireland | 53.0913889 | -7.9133333 | 226 | 2686 |
| Birdhill | city | Tiobraid Arann | Ireland | 52.7655556 | -8.4358333 | 255 | 2774 |
| Birr | city | County Offaly | Ireland | 53.0913889 | -7.9133333 | 226 | 2686 |
| Bishopland Ballymore Road | city | County Carlow | Ireland | 53.1263889 | -6.6155556 | 508 | 6469 |
| Bishops Village | city | Corcaigh | Ireland | 51.6402778 | -9.2958333 | 223 | 5243 |
| Bishopshall | city | Cill Chainnigh | Ireland | 52.315 | -7.1208333 | 160 | 3458 |
| Bishopslough Newtown | city | Cill Chainnigh | Ireland | 52.5955556 | -7.1430556 | 242 | 3309 |
| Bishopsquarter | city | An Clar | Ireland | 53.1258333 | -9.1194444 | 311 | 1170 |
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