| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Otaiven | city | Galicia | Spain | 42.33 | -8.48 | 1184 | 2353 |
| Otal | city | Aragon | Spain | 42.59 | -0.21 | 5915 | 325 |
| Otanes | city | Cantabria | Spain | 43.33 | -3.19 | 830 | 14614 |
| Otano | city | Navarra | Spain | 42.71 | -1.57 | 1748 | 4628 |
| Otar de Pregos | city | Galicia | Spain | 42.33 | -7.13 | 2509 | 2008 |
| Otarelo | city | Galicia | Spain | 42.43 | -6.99 | 1181 | 12752 |
| Otazu | city | Euskadi | Spain | 42.83 | -2.63 | 1765 | 69241 |
| Otazu | city | Navarra | Spain | 42.78 | -1.79 | 1669 | 2444 |
| Otceremendi | city | Euskadi | Spain | 43.10 | -2.75 | 1023 | 2592 |
| Oteitza | city | Navarra | Spain | 43.13 | -1.66 | 830 | 2913 |
| Oteiza | city | Navarra | Spain | 43.13 | -1.66 | 830 | 2913 |
| Oteiza | city | Navarra | Spain | 42.62 | -1.95 | 1669 | 2324 |
| Oteiza de la Solana | city | Navarra | Spain | 42.62 | -1.95 | 1669 | 2324 |
| Oteo | city | Castilla y Leon | Spain | 43.00 | -3.32 | 2549 | 1177 |
| Oteo | city | Euskadi | Spain | 42.72 | -2.37 | 2509 | 948 |
| Oter | city | Castilla-La Mancha | Spain | 40.75 | -2.45 | 3349 | 457 |
| Oter de Bodas | city | Castilla y Leon | Spain | 41.94 | -6.15 | 2654 | 774 |
| Oterico | city | Castilla y Leon | Spain | 42.78 | -5.92 | 3556 | 880 |
| Otero | city | Castilla y Leon | Spain | 41.94 | -6.15 | 2654 | 774 |
| Otero | city | Asturias | Spain | 43.54 | -6.16 | 830 | 5471 |
| Otero | city | Asturias | Spain | 43.45 | -6.11 | 1138 | 6697 |
| Otero | city | Asturias | Spain | 43.43 | -5.97 | 830 | 8789 |
| Otero | city | Asturias | Spain | 43.44 | -5.65 | 902 | 60170 |
| Otero | city | Asturias | Spain | 43.39 | -6.24 | 1669 | 2527 |
| Otero | city | Galicia | Spain | 43.25 | -7.42 | 1669 | 2012 |
| Otero | city | Asturias | Spain | 43.23 | -6.56 | 1948 | 3517 |
| Otero | city | Asturias | Spain | 43.14 | -5.83 | 1158 | 9041 |
| Otero | city | Asturias | Spain | 43.15 | -5.70 | 2509 | 4717 |
| Otero | city | Asturias | Spain | 43.06 | -6.48 | 3664 | 1490 |
| Otero | city | Cantabria | Spain | 42.83 | -4.03 | 3349 | 298 |
| Otero | city | Castilla y Leon | Spain | 42.57 | -6.78 | 1669 | 6083 |
| Otero | city | Galicia | Spain | 42.53 | -7.13 | 2647 | 1189 |
| Otero | city | Castilla y Leon | Spain | 42.54 | -6.60 | 1748 | 37627 |
| Otero | city | Galicia | Spain | 42.43 | -7.25 | 2509 | 1660 |
| Otero | city | Galicia | Spain | 42.38 | -7.09 | 2030 | 7358 |
| Otero | city | Galicia | Spain | 42.25 | -7.12 | 3349 | 1194 |
| Otero | city | Castilla-La Mancha | Spain | 40.00 | -4.52 | 1669 | 2001 |
| Otero | city | Asturias | Spain | 43.32 | -5.37 | 1669 | 3205 |
| Otero Vaciadores | city | Castilla y Leon | Spain | 40.88 | -5.77 | 2788 | 858 |
| Otero de Bodas | city | Castilla y Leon | Spain | 41.94 | -6.15 | 2654 | 774 |
| Otero de Bodos | city | Castilla y Leon | Spain | 41.94 | -6.15 | 2654 | 774 |
| Otero de Centenos | city | Castilla y Leon | Spain | 42.05 | -6.32 | 2896 | 615 |
| Otero de Curueno | city | Castilla y Leon | Spain | 42.86 | -5.40 | 3595 | 759 |
| Otero de Escarpizo | city | Castilla y Leon | Spain | 42.52 | -6.06 | 2818 | 3615 |
| Otero de Guardo | city | Castilla y Leon | Spain | 42.88 | -4.81 | 4189 | 936 |
| Otero de Herreros | city | Castilla y Leon | Spain | 40.82 | -4.21 | 4189 | 3012 |
| Otero de María Asensio | city | Castilla y Leon | Spain | 40.88 | -5.55 | 2847 | 5485 |
| Otero de Naraguantes | city | Castilla y Leon | Spain | 42.77 | -6.61 | 3349 | 6717 |
| Otero de Rey | city | Galicia | Spain | 43.10 | -7.61 | 1669 | 8880 |
| Otero de Sanabria | city | Castilla y Leon | Spain | 42.05 | -6.57 | 3349 | 1225 |
| Otero de Sariegos | city | Castilla y Leon | Spain | 41.82 | -5.61 | 2509 | 966 |
| Otero de las Duenas | city | Castilla y Leon | Spain | 42.79 | -5.77 | 3553 | 903 |
| Oteros de Boedo | city | Castilla y Leon | Spain | 42.66 | -4.49 | 3349 | 504 |
| Oteruelo | city | Castilla y Leon | Spain | 42.42 | -6.09 | 2883 | 6866 |
| Oteruelo de la Valdoncina | city | Castilla y Leon | Spain | 42.58 | -5.60 | 2693 | 130343 |
| Oteruelo de la Valduerna | city | Castilla y Leon | Spain | 42.42 | -6.09 | 2883 | 6866 |
| Oteruelo de la Vega | city | Castilla y Leon | Spain | 42.36 | -5.88 | 2555 | 4507 |
| Oteruelo del Valle | city | Madrid | Spain | 40.91 | -3.85 | 3559 | 756 |
| Oteruelos | city | Castilla y Leon | Spain | 41.84 | -2.60 | 3562 | 2722 |
| Otides | city | Euskadi | Spain | 43.23 | -3.38 | 830 | 2282 |
| Otilla | city | Castilla-La Mancha | Spain | 40.74 | -1.78 | 4189 | 62 |
| Otiñano | city | Navarra | Spain | 42.63 | -2.30 | 2509 | 999 |
| Otiñar | city | Andalucia | Spain | 37.68 | -3.76 | 2509 | 16316 |
| Oto | city | Aragon | Spain | 42.60 | -0.13 | 3494 | 341 |
| Oto Barren | city | Euskadi | Spain | 42.89 | -2.80 | 1689 | 19035 |
| Oto Goien | city | Euskadi | Spain | 42.89 | -2.80 | 1732 | 19035 |
| Oto Goien / Hueto Arriba | city | Euskadi | Spain | 42.89 | -2.80 | 1732 | 19035 |
| Otobarren | city | Euskadi | Spain | 42.89 | -2.80 | 1689 | 19035 |
| Otobarren / Hueto Abajo | city | Euskadi | Spain | 42.89 | -2.80 | 1689 | 19035 |
| Otogoien | city | Euskadi | Spain | 42.89 | -2.80 | 1732 | 19035 |
| Otogoien / Hueto Arriba | city | Euskadi | Spain | 42.89 | -2.80 | 1732 | 19035 |
| Otonel | city | Comunitat Valenciana | Spain | 39.28 | -0.85 | 830 | 472 |
| Otones | city | Castilla y Leon | Spain | 41.14 | -4.06 | 3349 | 968 |
| Otones de Benjumea | city | Castilla y Leon | Spain | 41.14 | -4.06 | 3349 | 968 |
| Otos | city | Comunitat Valenciana | Spain | 38.85 | -0.44 | 980 | 8594 |
| Otos | city | Murcia | Spain | 38.27 | -2.02 | 4189 | 317 |
| Otsagabia | city | Navarra | Spain | 42.91 | -1.09 | 3349 | 626 |
| Otsaurte | city | Euskadi | Spain | 42.93 | -2.25 | 2080 | 4365 |
| Otur | city | Asturias | Spain | 43.53 | -6.58 | 367 | 3305 |
| Otura | city | Asturias | Spain | 43.26 | -5.88 | 1669 | 11040 |
| Otura | city | Andalucia | Spain | 37.09 | -3.64 | 2690 | 43546 |
| Otxagabia | city | Navarra | Spain | 42.91 | -1.09 | 3349 | 626 |
| Otxandio | city | Euskadi | Spain | 43.04 | -2.65 | 1837 | 2317 |
| Otxobi | city | Navarra | Spain | 42.88 | -1.78 | 1669 | 1626 |
| Otzaurte | city | Euskadi | Spain | 42.93 | -2.25 | 2080 | 4365 |
| Otzerinmendi | city | Euskadi | Spain | 43.10 | -2.75 | 1023 | 2592 |
| Otás | city | Asturias | Spain | 43.12 | -6.59 | 1669 | 1821 |
| Otín | city | Aragon | Spain | 42.32 | -0.07 | 3349 | 300 |
| Otívar | city | Andalucia | Spain | 36.82 | -3.68 | 830 | 6465 |