| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ojo de Huancar | city | Salta | Argentina | -23.79 | -66.03 | 11174 | 0 |
| Orán | city | Salta | Argentina | -23.13 | -64.32 | 1095 | 57269 |
| Osma | city | Salta | Argentina | -25.20 | -65.50 | 4494 | 460 |
| Ovando | city | Salta | Argentina | -25.83 | -65.09 | 3349 | 0 |