| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ojo de Huancar | city | Provincia de Salta | Argentina | -23.78 | -66.02 | 11164 | 0 |
| Orán | city | Provincia de Salta | Argentina | -23.13 | -64.33 | 1105 | 52263 |
| Osma | city | Provincia de Salta | Argentina | -25.20 | -65.50 | 4494 | 460 |
| Ovando | city | Provincia de Salta | Argentina | -25.80 | -65.10 | 3087 | 0 |