| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Onatsfeld | city | Land Baden-Wurttemberg | Germany | 48.8666667 | 10.0666667 | 1541 | 20367 |
| Ondrup | city | Land Nordrhein-Westfalen | Germany | 51.7833333 | 7.3666667 | 301 | 19024 |
| Ondrup | city | Land Nordrhein-Westfalen | Germany | 51.7 | 7.4833333 | 226 | 56585 |
| Ondrup | city | Land Nordrhein-Westfalen | Germany | 51.7333333 | 7.6833333 | 328 | 40364 |
| Ondrup | city | Land Niedersachsen | Germany | 52.6 | 8.2333333 | 190 | 13322 |
| Oning | city | Land Bayern | Germany | 49.1 | 11.5166667 | 1535 | 8870 |
| Onkfeld | city | Land Nordrhein-Westfalen | Germany | 51.2166667 | 7.35 | 1105 | 57688 |
| Onnert | city | Land Nordrhein-Westfalen | Germany | 51.3 | 6.25 | 147 | 46702 |
| Onolzheim | city | Land Baden-Wurttemberg | Germany | 49.1166667 | 10.0333333 | 1377 | 12152 |
| Onsbach | city | Land Baden-Wurttemberg | Germany | 48.6 | 8.0333333 | 538 | 21325 |
| Onsdorf | city | Land Rheinland-Pfalz | Germany | 49.65 | 6.4833333 | 1059 | 12318 |
| Onstmettingen | city | Land Baden-Wurttemberg | Germany | 48.2833333 | 9.0333333 | 2923 | 21060 |
| Ontrup | city | Land Nordrhein-Westfalen | Germany | 51.7833333 | 7.1166667 | 308 | 62425 |
|
|