| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onau (historical) | city | Hawaii | United States | 20.62 | -156.43 | 114 | |
| Onauku | city | New Zealand | -41.12 | 174.37 | 183 | 65 | |
| Onauli | city | Uttar Pradesh | India | 24.67 | 82.93 | 1049 | 18923 |
| Onaushe | city | Omusati | Namibia | -18.08 | 15.38 | 3530 | 149 |