 | Bakategi | Basalgo | BASOA (bosque) |  |
 | Balento | Askarruntz | ETXEA |  |
 | Balentogain | Askarruntz | ETXEA |  |
 | Barrena | Elorregi | BASERRIA |  |
 | Barrenabeitia | Elorregi | AURKINTZA (paraje, termino...) |  |
 | Barrenaberri | Elorregi | TXALETA |  |
 | Barrenengoa | Kalea | KALEKO ETXEA |  |
 | Barrenetxe | Ubera | BASERRIA |  |
 | Barrenkalea | Kalea | KALEA |  |
 | Barruti | San Juan | BASERRIA |  |
 | Bartailliak | Angiozar | LARREA, ZELAIA |  |
 | Basagiri | San Juan | LARREA, ZELAIA |  |
 | Basagoen | Goiauzoa | PINUDIA |  |
 | Basako | Angiozar | BASOA (bosque) |  |
 | Basaldegi | Aldaiegia | GOILAUTADA |  |
 | Basaldegi | Aldaiegia | TONTORRA, GAINA (cima) |  |
 | Basalgo | Basalgo | AUZOA |  |
 | Basalgo | Basalgo | ELKARTEA |  |
 | Basarte | Sanantonabat | BASERRIA |  |
 | Basarte | Kalea | KALEA |  |
 | Basarteberri | Sanantonabat | ETXEA |  |
 | Basetxea | Basalgo | ELKARTEA |  |
 | Basitxi | San Juan | LARREA, ZELAIA |  |
 | Basoandia | Ubera | BASOA (bosque) |  |
 | Basobaltza | Angiozar | BASOA (bosque) |  |
 | Basoberriak | Osintxu | BASOA (bosque) |  |
 | Basolaua | Angiozar | BASOA (bosque) |  |
 | Basotxoa | Ubera | BASOA (bosque) |  |
 | Basozabal | Aritzeta | BASERRIA |  |
 | Basozar | Osintxu | BASOA (bosque) |  |
 | Basozarrak | Osintxu | BASOA (bosque) |  |
 | Bastokoaitza | Elosua | AURKINTZA (paraje, termino...) |  |
 | Bauleroena | Kalea | KALEKO ETXEA |  |
 | Beaiñanekoa | Kalea | KALEKO ETXEA |  |
 | Beatabasoa | Angiozar | BASOA (bosque) |  |
 | Beatarena | Angiozar | ETXEA |  |
 | Beatxurtu | Osintxu | BASERRIA |  |
 | Beatxurtu | Osintxu | ERREKATXOA |  |
 | Beatxurtuko txabola | Osintxu | TXABOLA, BORDA |  |
 | Beekoestaziñoa | Kalea | GELTOKIA |  |
 | Beheko depositoa | Kalea | UR-BILTEGIA |  |
 | Behitegia | Aranerreka | ABELETXEA (ganadu, oilo...) |  |
 | Beitiko txabola | Basalgo | TXABOLA, BORDA |  |
 | Beitiren iturria | Elosua | ITURRIA |  |
 | Beiztegiaundia | Buruñao | BASERRIA |  |
 | Beiztegietxebarri | Buruñao | BASERRIA |  |
 | Beiztegigoenengoa | Buruñao | BASERRIA |  |
 | Beiztegiko hegia | Buruñao | LUR ALDAPATSUA (montazgo) |  |
 | Bekobasoa | Aranerreka | BASOA (bosque) |  |
 | Bekoesparrua | Goiauzoa | LARREA, ZELAIA |  |