| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Bigbog | city | Kildare | Ireland | 52.89 | -6.83 | 830 | 2485 |
| Bigisland | city | Meath | Ireland | 53.50 | -7.03 | 308 | 1412 |
| Bigpark | city | Ireland | 52.80 | -8.05 | 410 | 1276 | |
| Bigstone | city | Kildare | Ireland | 52.90 | -6.76 | 830 | 2060 |
| Bilberry | city | Cork | Ireland | 51.93 | -8.13 | 249 | 9010 |
| Bilboa | city | Carlow | Ireland | 52.80 | -7.04 | 1013 | 1677 |
| Billa | city | Sligo | Ireland | 54.18 | -8.56 | 226 | 1968 |
| Billis | city | Monaghan | Ireland | 54.29 | -6.93 | 232 | 4845 |
| Billistown | city | An Iarmhi | Ireland | 53.60 | -7.10 | 390 | 1588 |
| Binalt | city | Donegal | Ireland | 55.07 | -7.53 | 0 | 1145 |
| Binbane | city | Cavan | Ireland | 54.01 | -7.12 | 830 | 1397 |
| Bing | city | Wexford | Ireland | 52.24 | -6.32 | 0 | 2061 |
| Binghamstown | city | Mayo | Ireland | 54.20 | -10.04 | 3 | 963 |
| Binghamstown | city | Mayo | Ireland | 54.21 | -10.05 | 3 | 1036 |
| Binkeeragh | city | Cavan | Ireland | 54.18 | -7.75 | 830 | 1186 |
| Binn Mhóráin | city | Clare | Ireland | 52.68 | -9.31 | 65 | 1243 |
| Binn Éadair | city | Fingal | Ireland | 53.39 | -6.07 | 3 | 9284 |
| Binnanea | city | Donegal | Ireland | 55.34 | -7.20 | 55 | 1230 |
| Binvoran | city | Clare | Ireland | 52.68 | -9.31 | 65 | 1243 |
| Biorra | city | Offaly | Ireland | 53.09 | -7.91 | 226 | 5432 |
| Birdhill | city | Ireland | 52.77 | -8.44 | 255 | 3701 | |
| Birr | city | Offaly | Ireland | 53.09 | -7.91 | 226 | 5432 |
| Bishopland Ballymore Road | city | Kildare | Ireland | 53.13 | -6.62 | 830 | 2686 |
| Bishops Village | city | Cork | Ireland | 51.64 | -9.30 | 223 | 1626 |
| Bishopshall | city | Kilkenny | Ireland | 52.31 | -7.12 | 160 | 14348 |
| Bishopslough Newtown | city | Kilkenny | Ireland | 52.60 | -7.14 | 242 | 2241 |
| Bishopsquarter | city | Clare | Ireland | 53.13 | -9.12 | 311 | 651 |