| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Opalton | city | Queensland | Australia | -23.25 | 142.77 | 830 | 0 |
| Opalville | city | Queensland | Australia | -24.78 | 142.73 | 830 | 0 |
| Opella | city | South Australia | Australia | -35.71 | 139.52 | 226 | 54 |
| Opera Yard | city | Queensland | Australia | -14.86 | 143.19 | 830 | 0 |
| Ophir | city | New South Wales | Australia | -33.17 | 149.23 | 1955 | 76 |
| Opossum Bay | city | Tasmania | Australia | -43.00 | 147.40 | 3 | 0 |