| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ondrup | city | Midtjylland | Denmark | 55.95 | 10.12 | 141 | 10055 |
| Onsbierg | city | Midtjylland | Denmark | 55.85 | 10.57 | 45 | 1733 |
| Onsbjaerg | city | Midtjylland | Denmark | 55.85 | 10.57 | 45 | 1733 |
| Onsbjerg | city | Midtjylland | Denmark | 55.85 | 10.57 | 45 | 1733 |
| Onsbjærg | city | Midtjylland | Denmark | 55.85 | 10.57 | 45 | 1733 |
| Onsted | city | Midtjylland | Denmark | 56.02 | 10.08 | 301 | 13329 |