UpAlphabetical listing of Places in Nicaragua
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Obraje | city | Leon | Nicaragua | 12.45 | -86.62 | 232 | 2982 |
| Obraje | city | Chinandega | Nicaragua | 12.80 | -86.97 | 62 | 8439 |
| Obregon | city | Granada | Nicaragua | 11.96 | -85.96 | 187 | 66731 |
| Obregon | city | Granada | Nicaragua | 11.96 | -85.96 | 187 | 81649 |
| Obregones | city | Matagalpa | Nicaragua | 12.77 | -85.78 | 1669 | 12947 |
| Ochomogo | city | Carazo | Nicaragua | 11.70 | -86.16 | 830 | 6467 |
| Ochomogo | city | Rivas | Nicaragua | 11.69 | -85.90 | 124 | 3721 |
| Ochomogo | city | Carazo | Nicaragua | 11.69 | -86.15 | 830 | 6423 |
| Ococona | city | Nueva Segovia | Nicaragua | 13.73 | -86.62 | 2903 | 3054 |
| Ococono | city | Nueva Segovia | Nicaragua | 13.73 | -86.62 | 2903 | 3054 |
| Ocona | city | Nueva Segovia | Nicaragua | 13.73 | -86.62 | 2903 | 3054 |
| Oconguas | city | Nueva Segovia | Nicaragua | 13.63 | -85.92 | 1975 | 4817 |
| Oconhuas | city | Nueva Segovia | Nicaragua | 13.63 | -85.92 | 1975 | 4817 |
| Ocotal | city | Leon | Nicaragua | 12.89 | -86.46 | 3349 | 5038 |
| Ocotal | city | Nueva Segovia | Nicaragua | 13.63 | -86.48 | 1968 | 32746 |
| Ocote de Abajo | city | Matagalpa | Nicaragua | 12.75 | -85.87 | 1984 | 11843 |
| Ocotillo | city | Leon | Nicaragua | 12.77 | -86.35 | 830 | 5128 |
| Ocoton | city | Leon | Nicaragua | 12.68 | -86.81 | 183 | 4474 |
| Oculí | city | Jinotega | Nicaragua | 14.17 | -85.24 | 830 | 2414 |
| Ojoche | city | Leon | Nicaragua | 12.62 | -86.68 | 331 | 4984 |
| Ojoche | city | Nueva Segovia | Nicaragua | 13.46 | -86.13 | 1840 | 9593 |
| Okonwás | city | Nueva Segovia | Nicaragua | 13.63 | -85.92 | 1975 | 4817 |
| Olama | city | Matagalpa | Nicaragua | 12.72 | -85.55 | 866 | 4234 |
| Olanceri | city | Atlantico Norte | Nicaragua | 14.21 | -83.52 | 42 | 0 |
| Olankeri | city | Atlantico Norte | Nicaragua | 14.21 | -83.52 | 42 | 0 |
| Olimpo | city | Managua | Nicaragua | 11.94 | -86.39 | 1194 | 22787 |
| Olomega | city | Leon | Nicaragua | 12.72 | -86.86 | 95 | 8957 |
| Omar Torrijos | city | Leon | Nicaragua | 12.28 | -86.84 | 29 | 11455 |
| Orange | city | Atlantico Norte | Nicaragua | 14.88 | -83.63 | 13 | 660 |
| Orilla | city | Granada | Nicaragua | 11.78 | -86.04 | 830 | 23025 |
| Orinoco | city | Atlantico Sur | Nicaragua | 12.55 | -83.71 | 0 | 386 |
| Orosí | city | Rivas | Nicaragua | 11.15 | -85.34 | 108 | 1403 |
| Oscotal | city | Managua | Nicaragua | 12.32 | -85.96 | 269 | 3071 |
| Ostinal | city | Rivas | Nicaragua | 11.11 | -85.76 | 75 | 1980 |
| Ostional | city | Rivas | Nicaragua | 11.11 | -85.76 | 75 | 1980 |
| Ostocal | city | Managua | Nicaragua | 12.32 | -85.96 | 269 | 3071 |
| Oyate | city | Nueva Segovia | Nicaragua | 13.49 | -86.74 | 3349 | 4477 |
| Oyote | city | Nueva Segovia | Nicaragua | 13.49 | -86.74 | 3349 | 4477 |
| Oyoto | city | Nueva Segovia | Nicaragua | 13.49 | -86.74 | 3349 | 4477 |
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