| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onis | city | Hardap | Namibia | -24.33 | 16.23 | 4189 | 0 |
| Onisa | city | Nigeria | 8.27 | 4.27 | 997 | 7710 | |
| Onisa | city | Nigeria | 8.15 | 4.43 | 1141 | 14006 | |
| Onisa | city | Nigeria | 8.00 | 4.08 | 1003 | 7704 | |
| Onisa | city | Nigeria | 7.88 | 4.03 | 1013 | 13593 | |
| Onisa | city | Nigeria | 7.63 | 4.10 | 830 | 5824 | |
| Onisade | city | Nigeria | 7.38 | 4.03 | 830 | 255028 | |
| Onisan-ni | city | Incheon | Korea, Republic of (South) | 37.66 | 126.62 | 26 | 65242 |
| Onisango | city | Nigeria | 7.60 | 4.05 | 830 | 9159 | |
| Onisau | city | Nigeria | 8.25 | 3.63 | 1010 | 0 | |
| Oniscani-Sat | city | Bacau | Romania | 46.77 | 26.92 | 830 | 5436 |
| Oniscani-Tirg | city | Bacau | Romania | 46.78 | 26.90 | 830 | 5455 |
| Onisemo | city | Nigeria | 7.33 | 3.45 | 249 | 2980 | |
| Oniseyidan | city | Logar | Afghanistan | 33.98 | 69.02 | 6709 | 29222 |
| Onishchenkov | city | Chernihivs'ka Oblast' | Ukraine | 50.51 | 32.36 | 390 | 4884 |
| Onishere | city | Ondo | Nigeria | 6.71 | 5.10 | 219 | 11597 |
| Onishevo | city | Arkhangel'skaya Oblast' | Russia | 64.61 | 40.31 | 36 | 38 |
| Onishi | city | Gunma | Japan | 36.16 | 139.06 | 830 | 18971 |
| Onishi | city | Gifu | Japan | 36.09 | 137.30 | 2509 | 22624 |
| Onishi | city | Fukuoka | Japan | 33.70 | 130.66 | 830 | 60594 |
| Onishi | city | Kanagawa | Japan | 35.37 | 139.35 | 52 | 352383 |
| Onishibetsu | city | Hokkaido | Japan | 45.32 | 142.12 | 42 | 400 |
| Onishicho-befu | city | Ehime | Japan | 34.06 | 132.90 | 321 | 28703 |
| Onishigasawa | city | Akita | Japan | 39.72 | 140.20 | 275 | 74531 |
| Onishika | city | Hokkaido | Japan | 44.15 | 141.66 | 82 | 2 |
| Onishika-minatomachi | city | Hokkaido | Japan | 44.15 | 141.66 | 82 | 2 |
| Onishkan' | city | Calarasi | Moldova | 47.37 | 28.28 | 830 | 8985 |
| Onishkani | city | Calarasi | Moldova | 47.37 | 28.28 | 830 | 8985 |
| Onishkany | city | Calarasi | Moldova | 47.37 | 28.28 | 830 | 8985 |
| Onishkan’ | city | Calarasi | Moldova | 47.37 | 28.28 | 830 | 8985 |
| Onishki | city | Poltavs'ka Oblast' | Ukraine | 49.81 | 32.73 | 262 | 2682 |
| Onishky | city | Poltavs'ka Oblast' | Ukraine | 49.81 | 32.73 | 262 | 2682 |
| Onishpol' | city | Zhytomyrs'ka Oblast' | Ukraine | 50.21 | 29.31 | 830 | 3129 |
| Onishpol’ | city | Zhytomyrs'ka Oblast' | Ukraine | 50.21 | 29.31 | 830 | 3129 |
| Onisibetu | city | Hokkaido | Japan | 45.32 | 142.12 | 42 | 400 |
| Onisigun | city | Lagos | Nigeria | 6.60 | 3.39 | 127 | 1310170 |
| Onisigun | city | Oyo | Nigeria | 7.61 | 3.78 | 830 | 12352 |
| Oniskis | city | Rokiskis | Lithuania | 56.13 | 25.53 | 360 | 1143 |
| Oniskis | city | Kauno Apskritis | Lithuania | 54.48 | 24.60 | 830 | 2155 |
| Oniskoviche | city | Brestskaya Oblast' | Belarus | 52.13 | 24.71 | 830 | 298 |
| Oniskovichi | city | Brestskaya Oblast' | Belarus | 52.13 | 24.71 | 830 | 298 |
| Oniskovo | city | Odes'ka Oblast' | Ukraine | 46.92 | 30.83 | 252 | 232 |
| Oniskowicze | city | Brestskaya Oblast' | Belarus | 52.13 | 24.71 | 830 | 298 |
| Onisnabb | city | Ghana | 5.62 | -0.70 | 830 | 25084 | |
| Oniso | city | Nigeria | 8.23 | 4.35 | 1079 | 13502 | |
| Oniso | city | Nigeria | 7.93 | 3.77 | 830 | 12274 | |
| Onisoa | city | Fianarantsoa | Madagascar | -21.50 | 46.02 | 2732 | 206 |
| Onisopi | city | Ogun | Nigeria | 6.83 | 3.58 | 219 | 49955 |
| Oniste | city | Viljandimaa | Estonia | 58.51 | 25.65 | 275 | 745 |
| Onisunni | city | Nigeria | 8.82 | 4.20 | 1669 | 4662 |