| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oberica | city | Rio Grande do Norte | Brazil | -5.52 | -35.53 | 209 | 4399 |
| Obidos | city | Para | Brazil | -1.90 | -55.52 | 269 | 23151 |
| Obidos | city | Amazonas | Brazil | -6.58 | -68.94 | 324 | 0 |
| Observatorio Sumauma | city | Amazonas | Brazil | -0.37 | -62.78 | 177 | 0 |