| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onats'ke | city | Poltavs'ka Oblast' | Ukraine | 50.28 | 33.63 | 830 | 2166 |
| Onats'ky | city | Poltavs'ka Oblast' | Ukraine | 49.89 | 34.46 | 830 | 2831 |
| Onatske | city | Poltavs'ka Oblast' | Ukraine | 50.28 | 33.63 | 830 | 2166 |
| Onatskovtsy | city | Khmel'nyts'ka Oblast' | Ukraine | 49.95 | 27.48 | 830 | 5066 |
| Onatskoye | city | Poltavs'ka Oblast' | Ukraine | 50.28 | 33.63 | 830 | 2166 |
| Onatsky | city | Poltavs'ka Oblast' | Ukraine | 49.89 | 34.46 | 830 | 2831 |
| Onats’ke | city | Poltavs'ka Oblast' | Ukraine | 50.28 | 33.63 | 830 | 2166 |
| Onats’ky | city | Poltavs'ka Oblast' | Ukraine | 49.89 | 34.46 | 830 | 2831 |
| Ongar-Nayman | city | Avtonomna Respublika Krym | Ukraine | 45.82 | 33.72 | 9 | 2295 |
| Onik | city | Zakarpats'ka Oblast' | Ukraine | 48.22 | 23.00 | 830 | 12427 |
| Onikiyevka | city | Chernihivs'ka Oblast' | Ukraine | 50.70 | 32.52 | 403 | 845 |
| Onilove | city | Odes'ka Oblast' | Ukraine | 47.45 | 29.90 | 830 | 2383 |
| Onilovo | city | Odes'ka Oblast' | Ukraine | 47.45 | 29.90 | 830 | 2383 |
| Onilovo | city | Odes'ka Oblast' | Ukraine | 47.40 | 29.87 | 396 | 1915 |
| Onishchenkov | city | Chernihivs'ka Oblast' | Ukraine | 50.51 | 32.36 | 390 | 4884 |
| 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 |
| Oniskovo | city | Odes'ka Oblast' | Ukraine | 46.92 | 30.83 | 252 | 232 |
| Onitkovtsy | city | Vinnyts'ka Oblast' | Ukraine | 48.94 | 28.54 | 869 | 745 |
| Onok | city | Zakarpats'ka Oblast' | Ukraine | 48.22 | 23.00 | 830 | 12427 |
| Onokivtsi | city | Zakarpats'ka Oblast' | Ukraine | 48.66 | 22.34 | 406 | 63785 |
| Onokiwzi | city | Zakarpats'ka Oblast' | Ukraine | 48.66 | 22.34 | 406 | 63785 |
| Onokovce | city | Zakarpats'ka Oblast' | Ukraine | 48.66 | 22.34 | 406 | 63785 |
| Onokovtse | city | Zakarpats'ka Oblast' | Ukraine | 48.66 | 22.34 | 406 | 63785 |
| Onokovtsy | city | Zakarpats'ka Oblast' | Ukraine | 48.66 | 22.34 | 406 | 63785 |
| Onor'yevka | city | Odes'ka Oblast' | Ukraine | 47.13 | 30.65 | 272 | 2109 |
| Onor’yevka | city | Odes'ka Oblast' | Ukraine | 47.13 | 30.65 | 272 | 2109 |
| Onufriivka | city | Kirovohrads'ka Oblast' | Ukraine | 48.91 | 33.45 | 334 | 2618 |
| Onufrijiwka | city | Kirovohrads'ka Oblast' | Ukraine | 48.91 | 33.45 | 334 | 2618 |
| Onufriyevka | city | Cherkas'ka Oblast' | Ukraine | 49.02 | 30.67 | 830 | 4488 |
| Onufriyevka | city | Kirovohrads'ka Oblast' | Ukraine | 48.91 | 33.45 | 334 | 2618 |
| Onufriyevka | city | Odes'ka Oblast' | Ukraine | 47.82 | 29.83 | 390 | 3408 |
| Onufriyevka | city | Mykolayivs'ka Oblast' | Ukraine | 47.30 | 32.22 | 59 | 2086 |
| Onufriyevna | city | Odes'ka Oblast' | Ukraine | 47.82 | 29.83 | 390 | 3408 |
| Onufriyivka | city | Kirovohrads'ka Oblast' | Ukraine | 48.91 | 33.45 | 334 | 2618 |
| Onufriyivka | city | Odes'ka Oblast' | Ukraine | 47.82 | 29.83 | 390 | 3408 |
| Onut | city | Chernivets'ka Oblast' | Ukraine | 48.57 | 26.05 | 830 | 7810 |
| Onutul-Mik | city | Chernivets'ka Oblast' | Ukraine | 48.57 | 26.05 | 830 | 7810 |
| Onykiivka | city | Chernihivs'ka Oblast' | Ukraine | 50.70 | 32.52 | 403 | 845 |
| Onykiyivka | city | Chernihivs'ka Oblast' | Ukraine | 50.70 | 32.52 | 403 | 845 |
| Onylove | city | Odes'ka Oblast' | Ukraine | 47.45 | 29.90 | 830 | 2383 |
| Onylove | city | Odes'ka Oblast' | Ukraine | 47.40 | 29.87 | 396 | 1915 |
| Onyschenkiv | city | Chernihivs'ka Oblast' | Ukraine | 50.51 | 32.36 | 390 | 4884 |
| Onyschenky | city | Poltavs'ka Oblast' | Ukraine | 49.59 | 33.90 | 370 | 2546 |
| Onyschenky | city | Poltavs'ka Oblast' | Ukraine | 49.14 | 33.59 | 236 | 9471 |
| Onyshchenkiv | city | Chernihivs'ka Oblast' | Ukraine | 50.51 | 32.36 | 390 | 4884 |
| Onyshchenky | city | Poltavs'ka Oblast' | Ukraine | 49.14 | 33.59 | 236 | 9471 |
| Onyshchenky | city | Poltavs'ka Oblast' | Ukraine | 49.59 | 33.90 | 370 | 2546 |
| Onyshkovtse | city | Ternopil's'ka Oblast' | Ukraine | 50.12 | 26.14 | 830 | 3427 |
| Onyshkovtsy | city | Khmel'nyts'ka Oblast' | Ukraine | 49.96 | 27.23 | 885 | 3442 |
| Onyshky | city | Poltavs'ka Oblast' | Ukraine | 49.81 | 32.73 | 262 | 2682 |
| Onyshpil | city | Zhytomyrs'ka Oblast' | Ukraine | 50.21 | 29.31 | 830 | 3129 |
| Onyshpil' | city | Zhytomyrs'ka Oblast' | Ukraine | 50.21 | 29.31 | 830 | 3129 |
| Onyshpil’ | city | Zhytomyrs'ka Oblast' | Ukraine | 50.21 | 29.31 | 830 | 3129 |
| Onytkivtsi | city | Vinnyts'ka Oblast' | Ukraine | 48.94 | 28.54 | 869 | 745 |