| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Baile Hamaltúin | city | Leitrim | Ireland | 54.31 | -8.18 | 229 | 1793 |
| Baile na Moinge | city | Leitrim | Ireland | 53.99 | -8.03 | 347 | 2438 |
| Baile na Míoltóg | city | Leitrim | Ireland | 54.12 | -7.92 | 990 | 346 |
| Baile na mBráthar | city | Leitrim | Ireland | 54.23 | -8.32 | 157 | 1129 |
| Balinlig | city | Leitrim | Ireland | 54.38 | -8.33 | 830 | 531 |
| Ballinaglera | city | Leitrim | Ireland | 54.16 | -8.01 | 308 | 505 |
| Ballinagleragh | city | Leitrim | Ireland | 54.16 | -8.01 | 308 | 505 |
| Ballinamore | city | Leitrim | Ireland | 54.05 | -7.80 | 246 | 1863 |
| Ballinwing | city | Leitrim | Ireland | 53.99 | -8.03 | 347 | 2438 |
| Balloor | city | Leitrim | Ireland | 54.44 | -8.38 | 3 | 986 |
| Ballymnameeltoge | city | Leitrim | Ireland | 54.12 | -7.92 | 990 | 346 |
| Ballynameeltoge | city | Leitrim | Ireland | 54.12 | -7.92 | 990 | 346 |
| Ballynameeltogue | city | Leitrim | Ireland | 54.12 | -7.92 | 990 | 346 |
| Banagher | city | Leitrim | Ireland | 54.27 | -8.32 | 203 | 1134 |
| Beagh | city | Leitrim | Ireland | 54.19 | -8.26 | 383 | 1116 |
| Beal an Atha Moir | city | Leitrim | Ireland | 54.05 | -7.80 | 246 | 1863 |
| Bellanaboy | city | Leitrim | Ireland | 54.01 | -8.06 | 209 | 2500 |
| Boggaun | city | Leitrim | Ireland | 54.08 | -7.89 | 830 | 889 |
| Boggaun | city | Leitrim | Ireland | 54.26 | -8.20 | 416 | 1402 |
| Boleybaun | city | Leitrim | Ireland | 54.17 | -8.18 | 830 | 691 |
| Boleymaguire | city | Leitrim | Ireland | 54.14 | -8.20 | 977 | 589 |
| Boneill | city | Leitrim | Ireland | 54.03 | -7.91 | 164 | 1066 |
| Both Néill | city | Leitrim | Ireland | 54.03 | -7.91 | 164 | 1066 |
| Bridgetown | city | Leitrim | Ireland | 54.42 | -8.17 | 830 | 710 |
| Briosc-chluanach | city | Leitrim | Ireland | 54.29 | -8.08 | 830 | 578 |
| Briscloonagh | city | Leitrim | Ireland | 54.29 | -8.08 | 830 | 578 |
| Brockagh | city | Leitrim | Ireland | 54.28 | -7.98 | 830 | 740 |
| Bronagh | city | Leitrim | Ireland | 54.27 | -8.03 | 902 | 506 |
| Brónach | city | Leitrim | Ireland | 54.27 | -8.03 | 902 | 506 |
| Buaile Mhig Uidhir | city | Leitrim | Ireland | 54.14 | -8.20 | 977 | 589 |
| Buckode | city | Leitrim | Ireland | 54.43 | -8.21 | 830 | 851 |
| Bundrowe's Bridge | city | Leitrim | Ireland | 54.47 | -8.32 | 3 | 2362 |
| Bundrowe’s Bridge | city | Leitrim | Ireland | 54.47 | -8.32 | 3 | 2362 |
| Bunduff Bridge | city | Leitrim | Ireland | 54.46 | -8.38 | 3 | 791 |
| Béal an ??tha Buí | city | Leitrim | Ireland | 54.01 | -8.06 | 209 | 2500 |