| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Baile Mhic Shamhráin | city | Cavan | Ireland | 54.07 | -7.68 | 242 | 1230 |
| Baile Sheamais Dhuibh | city | Cavan | Ireland | 53.87 | -7.20 | 830 | 2669 |
| Baileborough | city | Cavan | Ireland | 53.92 | -6.97 | 830 | 3293 |
| Bailieborough | city | Cavan | Ireland | 53.92 | -6.97 | 830 | 3293 |
| Bakers Bridge | city | Cavan | Ireland | 54.06 | -7.42 | 232 | 2782 |
| Ballinagh | city | Cavan | Ireland | 53.93 | -7.42 | 275 | 2580 |
| Ballyconnell | city | Cavan | Ireland | 54.12 | -7.58 | 239 | 2161 |
| Ballyhaise | city | Cavan | Ireland | 54.05 | -7.32 | 242 | 2982 |
| Ballyheelan | city | Cavan | Ireland | 53.83 | -7.35 | 249 | 1428 |
| Ballyheelna | city | Cavan | Ireland | 53.83 | -7.35 | 249 | 1428 |
| Ballyhugh | city | Cavan | Ireland | 54.09 | -7.53 | 275 | 1746 |
| Ballyjamesduff | city | Cavan | Ireland | 53.87 | -7.20 | 830 | 2669 |
| Ballymagauran | city | Cavan | Ireland | 54.07 | -7.68 | 242 | 1230 |
| Ballynahaia | city | Cavan | Ireland | 54.07 | -7.04 | 413 | 2963 |
| Ballynallon Bridge | city | Cavan | Ireland | 54.05 | -7.24 | 249 | 1669 |
| Bawnboy | city | Cavan | Ireland | 54.12 | -7.68 | 321 | 1174 |
| Beal Atha Conaill | city | Cavan | Ireland | 54.12 | -7.58 | 239 | 2161 |
| Beal Atha na nEach | city | Cavan | Ireland | 53.93 | -7.42 | 275 | 2580 |
| Beal Tairbirt | city | Cavan | Ireland | 54.10 | -7.45 | 246 | 2628 |
| Beglieve | city | Cavan | Ireland | 53.94 | -7.04 | 830 | 1955 |
| Bellaheady Bridge | city | Cavan | Ireland | 54.09 | -7.62 | 242 | 1559 |
| Bellahillan Bridge | city | Cavan | Ireland | 53.96 | -7.46 | 305 | 1818 |
| Bellanacargy | city | Cavan | Ireland | 54.04 | -7.25 | 259 | 1748 |
| Bellananagh | city | Cavan | Ireland | 53.93 | -7.42 | 275 | 2580 |
| Bellville | city | Cavan | Ireland | 53.94 | -7.41 | 291 | 3182 |
| Belturbet | city | Cavan | Ireland | 54.10 | -7.45 | 246 | 2628 |
| Beul Tairbeirt | city | Cavan | Ireland | 54.10 | -7.45 | 246 | 2628 |
| Binbane | city | Cavan | Ireland | 54.01 | -7.12 | 830 | 1397 |
| Binkeeragh | city | Cavan | Ireland | 54.18 | -7.75 | 830 | 1186 |
| Blacklion | city | Cavan | Ireland | 54.29 | -7.88 | 239 | 1921 |
| Blackrocks Cross | city | Cavan | Ireland | 54.16 | -7.78 | 830 | 768 |
| Blackwater Bridge | city | Cavan | Ireland | 54.09 | -7.71 | 246 | 1279 |
| Boagh | city | Cavan | Ireland | 54.05 | -7.01 | 324 | 1486 |
| Borim | city | Cavan | Ireland | 54.17 | -7.70 | 318 | 1241 |
| Bursan | city | Cavan | Ireland | 54.19 | -7.86 | 1092 | 798 |
| Butlers Bridge | city | Cavan | Ireland | 54.04 | -7.38 | 249 | 4945 |
| Butlersbridge | city | Cavan | Ireland | 54.04 | -7.38 | 249 | 4945 |
| Béal Átha hÉis | city | Cavan | Ireland | 54.05 | -7.32 | 242 | 2982 |