| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Bacugno | city | Lazio | Italy | 42.53 | 13.12 | 2598 | 1311 |
| Badino | city | Lazio | Italy | 41.28 | 13.20 | 0 | 16119 |
| Bagnaia | city | Lazio | Italy | 42.42 | 12.15 | 1961 | 30056 |
| Bagni | city | Lazio | Italy | 41.95 | 12.72 | 164 | 110397 |
| Bagni Acque Albule | city | Lazio | Italy | 41.95 | 12.72 | 164 | 110397 |
| Bagni Albule | city | Lazio | Italy | 41.95 | 12.72 | 164 | 110397 |
| Bagni di Stigliano | city | Lazio | Italy | 42.12 | 12.03 | 830 | 3278 |
| Bagni di Tivoli | city | Lazio | Italy | 41.95 | 12.72 | 164 | 110397 |
| Bagni di Vicarello | city | Lazio | Italy | 42.17 | 12.20 | 830 | 7915 |
| Bagnolo | city | Lazio | Italy | 42.40 | 12.38 | 830 | 9882 |
| Bagnolo | city | Lazio | Italy | 42.65 | 13.22 | 3349 | 1157 |
| Bagnoregio | city | Lazio | Italy | 42.62 | 12.08 | 1669 | 5191 |
| Bagnoregiu | city | Lazio | Italy | 42.62 | 12.08 | 1669 | 5191 |
| Bainsizza | city | Lazio | Italy | 41.48 | 12.78 | 72 | 30873 |
| Balneoregium | city | Lazio | Italy | 42.62 | 12.08 | 1669 | 5191 |
| Barbarano Romano | city | Lazio | Italy | 42.25 | 12.07 | 1669 | 6334 |
| Barbona | city | Lazio | Italy | 42.52 | 13.13 | 2601 | 1415 |
| Bassanello | city | Lazio | Italy | 42.42 | 12.35 | 964 | 11132 |
| Bassano Romano | city | Lazio | Italy | 42.22 | 12.20 | 1669 | 9842 |
| Bassano di Sutri | city | Lazio | Italy | 42.22 | 12.20 | 1669 | 9842 |
| Bassano in Teverina | city | Lazio | Italy | 42.47 | 12.32 | 830 | 9905 |
| Bassiano | city | Lazio | Italy | 41.55 | 13.03 | 1669 | 12281 |
| Bella Farnia | city | Lazio | Italy | 41.37 | 12.97 | 29 | 13333 |
| Bellegra | city | Lazio | Italy | 41.88 | 13.02 | 2043 | 16470 |
| Belmonte Castello | city | Lazio | Italy | 41.58 | 13.80 | 951 | 9409 |
| Belmonte in Sabina | city | Lazio | Italy | 42.32 | 12.88 | 2509 | 5380 |
| Biede | city | Lazio | Italy | 42.27 | 12.02 | 984 | 5948 |
| Bigioni | city | Lazio | Italy | 42.58 | 12.93 | 3349 | 1600 |
| Blera | city | Lazio | Italy | 42.27 | 12.02 | 984 | 5948 |
| Boccea | city | Lazio | Italy | 41.97 | 12.32 | 246 | 120759 |
| Bocchignano | city | Lazio | Italy | 42.25 | 12.70 | 830 | 11246 |
| Bolsena | city | Lazio | Italy | 42.65 | 11.98 | 1669 | 6042 |
| Bolsena järv | city | Lazio | Italy | 42.65 | 11.98 | 1669 | 6042 |
| Bolsenasjön | city | Lazio | Italy | 42.65 | 11.98 | 1669 | 6042 |
| Bolsēnas ezers | city | Lazio | Italy | 42.65 | 11.98 | 1669 | 6042 |
| Bomarzo | city | Lazio | Italy | 42.48 | 12.25 | 921 | 6931 |
| Bomarzu | city | Lazio | Italy | 42.48 | 12.25 | 921 | 6931 |
| Borbona | city | Lazio | Italy | 42.52 | 13.13 | 2601 | 1415 |
| Borghetto | city | Lazio | Italy | 42.33 | 12.45 | 328 | 12793 |
| Borgo Bainsizza | city | Lazio | Italy | 41.48 | 12.78 | 72 | 30873 |
| Borgo Carso | city | Lazio | Italy | 41.53 | 12.88 | 65 | 32149 |
| Borgo Ermada | city | Lazio | Italy | 41.30 | 13.17 | 9 | 20877 |
| Borgo Faiti | city | Lazio | Italy | 41.47 | 13.00 | 16 | 30418 |
| Borgo Fanti | city | Lazio | Italy | 41.47 | 13.00 | 16 | 30418 |
| Borgo Grappa | city | Lazio | Italy | 41.38 | 12.95 | 29 | 15993 |
| Borgo Hermada | city | Lazio | Italy | 41.30 | 13.17 | 9 | 20877 |
| Borgo Isonzo | city | Lazio | Italy | 41.42 | 12.90 | 26 | 30667 |
| Borgo Montello | city | Lazio | Italy | 41.50 | 12.77 | 62 | 28082 |
| Borgo Montenero | city | Lazio | Italy | 41.28 | 13.10 | 59 | 20135 |
| Borgo Odescalchi | city | Lazio | Italy | 42.08 | 11.80 | 32 | 32139 |
| Borgo Pantano | city | Lazio | Italy | 42.14 | 11.76 | 121 | 20651 |
| Borgo Pasubio | city | Lazio | Italy | 41.40 | 13.03 | 22 | 18465 |
| Borgo Piave | city | Lazio | Italy | 41.48 | 12.87 | 65 | 37912 |
| Borgo Podgora | city | Lazio | Italy | 41.52 | 12.85 | 82 | 29461 |
| Borgo Quinzio | city | Lazio | Italy | 42.17 | 12.72 | 830 | 13402 |
| Borgo Sabotino | city | Lazio | Italy | 41.42 | 12.83 | 0 | 24248 |
| Borgo San Michele | city | Lazio | Italy | 41.43 | 12.97 | 39 | 34484 |
| Borgo Santa Rita | city | Lazio | Italy | 41.63 | 12.48 | 85 | 32496 |
| Borgo Velino | city | Lazio | Italy | 42.40 | 13.05 | 2509 | 3461 |
| Borgo Vodice | city | Lazio | Italy | 41.33 | 13.10 | 16 | 14497 |
| Borgo Vòdica | city | Lazio | Italy | 41.33 | 13.10 | 16 | 14497 |
| Borgocollefegato | city | Lazio | Italy | 42.20 | 13.23 | 2598 | 2916 |
| Borgorose | city | Lazio | Italy | 42.20 | 13.23 | 2598 | 2916 |
| Boville Ernica | city | Lazio | Italy | 41.63 | 13.47 | 830 | 24886 |
| Bracciano | city | Lazio | Italy | 42.10 | 12.17 | 849 | 11142 |
| Brusciano | city | Lazio | Italy | 42.27 | 13.15 | 2519 | 1755 |
| Bullicame | city | Lazio | Italy | 42.42 | 12.08 | 984 | 32994 |