| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Онсаг | city | Picardie | France | 49.34 | 2.36 | 393 | 17317 |
| Онсала | city | Halland | Sweden | 57.42 | 12.02 | 111 | 10490 |
| Онсеумвиј | city | Haute-Normandie | France | 49.57 | 1.05 | 830 | 16282 |
| Онси | city | Bourgogne | France | 47.33 | 4.83 | 1125 | 2477 |
| Онсиз-Комп | city | Auvergne | France | 45.93 | 2.81 | 2509 | 3955 |
| Онсизон | city | Midi-Pyrenees | France | 42.87 | 0.34 | 2683 | 2220 |
| Онсињон | city | Languedoc-Roussillon | France | 42.76 | 2.52 | 830 | 1207 |
| Онсовије | city | Picardie | France | 49.57 | 2.39 | 830 | 6285 |
| Онсонилья | city | Castilla y Leon | Spain | 42.52 | -5.58 | 2604 | 36164 |
| Онсонілья | city | Castilla y Leon | Spain | 42.52 | -5.58 | 2604 | 36164 |
| Онста | city | Nord-Pas-de-Calais | France | 50.60 | 3.19 | 95 | 80481 |
| Онстапель | city | Leningradskaya Oblast' | Russia | 59.41 | 28.92 | 305 | 150 |
| Онсу | city | Xinjiang | China | 41.27 | 80.24 | 3631 | 3144 |
| Онсуи | city | Provence-Alpes-Cote d'Azur | France | 43.74 | 5.46 | 862 | 11907 |
| Онсьё | city | Rhone-Alpes | France | 45.96 | 5.47 | 2559 | 3318 |
| Онсьє | city | Rhone-Alpes | France | 45.96 | 5.47 | 2559 | 3318 |