| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ojos de Agua | city | Libertador General Bernardo O'Higgins | Chile | -34.62 | -71.02 | 1131 | 7969 |
| Olivar | city | Libertador General Bernardo O'Higgins | Chile | -34.21 | -70.82 | 1669 | 5104 |
| Olivar | city | Libertador General Bernardo O'Higgins | Chile | -34.23 | -70.83 | 1669 | 4916 |
| Olivar | city | Libertador General Bernardo O'Higgins | Chile | -34.23 | -70.88 | 1669 | 3161 |
| Olivar Alto | city | Libertador General Bernardo O'Higgins | Chile | -34.21 | -70.82 | 1669 | 5104 |
| Olivar Bajo | city | Libertador General Bernardo O'Higgins | Chile | -34.23 | -70.88 | 1669 | 3161 |
| Orilla La Vega | city | Libertador General Bernardo O'Higgins | Chile | -34.70 | -71.63 | 830 | 895 |
| Orilla Pencahue | city | Libertador General Bernardo O'Higgins | Chile | -34.45 | -71.15 | 889 | 30687 |
| Orilla de Pencahue | city | Libertador General Bernardo O'Higgins | Chile | -34.45 | -71.15 | 889 | 30687 |
| Orocoipo | city | Libertador General Bernardo O'Higgins | Chile | -34.20 | -70.75 | 1765 | 7079 |