| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onna | city | Plateaux | Congo | -1.72 | 16.10 | 1043 | 298 |
| Onna | city | Abruzzo | Italy | 42.32 | 13.47 | 1938 | 19621 |
| Onna | city | Okinawa | Japan | 26.50 | 127.85 | 830 | 10820 |
| Onna | city | Kanagawa | Japan | 35.44 | 139.35 | 137 | 289506 |
| Onna | city | Overijssel | Netherlands | 52.77 | 6.15 | 9 | 35062 |
| Onna-son | city | Okinawa | Japan | 26.50 | 127.85 | 830 | 10820 |
| Onnaams | city | Hardap | Namibia | -22.90 | 17.32 | 6230 | 0 |
| Onnae | city | Gyeongbuk | Korea, Republic of (South) | 35.93 | 128.17 | 830 | 7795 |
| Onnagawa | city | Akita | Japan | 39.87 | 139.82 | 3 | 11874 |
| Onnahalli | city | Karnataka | India | 15.11 | 76.88 | 1669 | 140092 |
| Onnai | city | Sakhalinskaya Oblast' | Russia | 49.59 | 142.15 | 39 | 296 |
| Onnaing | city | Nord-Pas-de-Calais | France | 50.39 | 3.60 | 124 | 51588 |
| Onnal | city | Kerala | India | 11.55 | 75.83 | 246 | 119238 |
| Onnalinda | city | Pennsylvania | United States | 40.31 | -78.68 | 2509 | |
| Onnampalli | city | Andhra Pradesh | India | 18.24 | 79.32 | 941 | 43887 |
| Onnampalli | city | Andhra Pradesh | India | 18.14 | 79.45 | 918 | 46862 |
| Onnamu-gol | city | Gyeonggi | Korea, Republic of (South) | 37.09 | 127.33 | 357 | 8740 |
| Onnamu-gol | city | Gyeonggi | Korea, Republic of (South) | 37.46 | 127.47 | 364 | 10065 |
| Onnamu-gol | city | Chungbuk | Korea, Republic of (South) | 37.12 | 127.85 | 830 | 9406 |
| Onnamu-gol | city | Chungnam | Korea, Republic of (South) | 36.67 | 126.32 | 72 | 5573 |
| Onnamu-kol | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 127.97 | 1013 | 8137 |
| Onnamugol | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 127.97 | 1013 | 8137 |
| Onnamuyeoul | city | Gangwon | Korea, Republic of (South) | 37.76 | 127.98 | 830 | 2549 |
| Onnamuyoul | city | Gangwon | Korea, Republic of (South) | 37.76 | 127.98 | 830 | 2549 |
| Onnapuram | city | Tamil Nadu | India | 12.72 | 79.18 | 830 | 45713 |
| Onnatai | city | Akita | Japan | 40.19 | 140.88 | 1669 | 3418 |
| Onnau | city | Nordrhein-Westfalen | Germany | 50.84 | 6.67 | 314 | 31189 |
| Onnay-Gava | city | Sakhalinskaya Oblast' | Russia | 49.59 | 142.15 | 39 | 296 |
| Onnazutsumi | city | Kanagawa | Japan | 35.16 | 139.64 | 196 | 96022 |
| Onne | city | Hokkaido | Japan | 43.64 | 144.03 | 830 | 745 |
| Onne | city | Rivers | Nigeria | 4.72 | 7.15 | 1669 | 43739 |
| Onneberg | city | Gavleborg | Sweden | 61.38 | 16.08 | 321 | 2039 |
| Onnebetsu | city | Hokkaido | Japan | 44.19 | 142.23 | 830 | 2149 |
| Onnebetsumachi | city | Hokkaido | Japan | 44.19 | 142.23 | 830 | 2149 |
| Onnebira | city | Hokkaido | Japan | 43.07 | 144.25 | 19 | 54577 |
| Onneby | city | Varmland | Sweden | 60.15 | 13.03 | 321 | 270 |
| Onnedomari | city | Hokkaido | Japan | 43.63 | 146.35 | 3 | 0 |
| Onnehira | city | Hokkaido | Japan | 43.07 | 144.25 | 19 | 54577 |
| Onnekikin | city | Hokkaido | Japan | 43.64 | 144.03 | 830 | 745 |
| Onnekin | city | Hokkaido | Japan | 43.64 | 144.03 | 830 | 745 |
| Onneking | city | Nordrhein-Westfalen | Germany | 51.21 | 7.61 | 1197 | 63943 |
| Onnekkin | city | Hokkaido | Japan | 43.64 | 144.03 | 830 | 745 |
| Onnekusunai | city | Hokkaido | Japan | 43.80 | 145.42 | 0 | 279 |
| Onnekvarn | city | Kronoberg | Sweden | 56.88 | 13.55 | 830 | 494 |
| Onnela | city | Lappi | Finland | 68.97 | 28.12 | 830 | 0 |
| Onnela | city | Lappi | Finland | 69.90 | 27.03 | 830 | 0 |
| Onnela | city | Lappi | Finland | 67.45 | 26.87 | 830 | 0 |
| Onnela | city | Lappi | Finland | 65.80 | 26.92 | 830 | 0 |
| Onneley | city | Staffordshire | United Kingdom | 52.98 | -2.37 | 830 | 18557 |
| Onnen | city | Groningen | Netherlands | 53.16 | 6.64 | 6 | 36087 |
| Onnenai | city | Hokkaido | Japan | 44.59 | 142.29 | 295 | 1635 |
| Onnenmyaki | city | Kareliya | Russia | 62.05 | 31.12 | 377 | 149 |
| Onnens | city | Vaud | Switzerland | 46.84 | 6.69 | 1669 | 5000 |
| Onnens | city | Freiburg | Switzerland | 46.78 | 7.04 | 2509 | 11880 |
| Onnens (VD) | city | Vaud | Switzerland | 46.84 | 6.69 | 1669 | 5000 |
| Onnered | city | Vastra Gotaland | Sweden | 57.64 | 11.88 | 108 | 34025 |
| Onneresch | city | Groningen | Netherlands | 53.14 | 6.64 | 6 | 34024 |
| Onnerod | city | Vastra Gotaland | Sweden | 57.85 | 11.83 | 137 | 7677 |
| Onnerod | city | Vastra Gotaland | Sweden | 57.64 | 11.88 | 108 | 34025 |
| Onnerod | city | Vastra Gotaland | Sweden | 57.70 | 12.20 | 341 | 16637 |
| Onnert | city | Nordrhein-Westfalen | Germany | 51.30 | 6.26 | 137 | 26056 |
| Onnerudstorp | city | Varmland | Sweden | 59.40 | 13.38 | 246 | 7334 |
| Onnerup | city | Skane | Sweden | 55.72 | 13.07 | 45 | 18809 |
| Onnerusu | city | Hokkaido | Japan | 43.77 | 145.43 | 68 | 329 |
| Onnes | city | Sakha (Yakutiya) | Russia | 60.46 | 131.10 | 830 | 0 |
| Onnesmark | city | Vasterbotten | Sweden | 64.47 | 21.30 | 65 | 209 |
| Onnestad | city | Skane | Sweden | 56.05 | 14.02 | 32 | 5908 |
| Onneto | city | Hokkaido | Japan | 43.28 | 145.52 | 134 | 4865 |
| Onnetomari | city | Hokkaido | Japan | 43.63 | 146.35 | 3 | 0 |
| Onnex | city | Rhone-Alpes | France | 45.94 | 6.17 | 1906 | 49868 |
| Onneyu | city | Hokkaido | Japan | 43.75 | 143.51 | 1013 | 4058 |
| Onnezies | city | Wallonie | Belgium | 50.36 | 3.72 | 298 | 11652 |
| Onnigyun | city | Rakhine State | Burma | 19.55 | 93.87 | 9 | 2034 |
| Onnikmaa | city | Varsinais-Suomi | Finland | 60.58 | 21.58 | 36 | 762 |
| Onningby | city | Aland | Finland | 60.12 | 20.02 | 32 | 1469 |
| Onnion | city | Rhone-Alpes | France | 46.17 | 6.48 | 2700 | 5626 |
| Onnistaipale | city | Birkaland | Finland | 61.70 | 24.33 | 341 | 894 |
| Onniste | city | Viljandimaa | Estonia | 58.51 | 25.65 | 275 | 745 |
| Onnivaara | city | Pohjois-Savo | Finland | 62.93 | 28.98 | 830 | 359 |
| Onno | city | Lombardia | Italy | 45.92 | 9.28 | 830 | 10615 |
| Onnod-Raez | city | Pays de la Loire | France | 47.02 | -1.88 | 39 | 5130 |
| Onnomae | city | Vorumaa | Estonia | 57.90 | 27.00 | 246 | 8365 |
| Onntorbe | city | Matam | Senegal | 15.70 | -13.42 | 108 | 894 |
| Onnupuram | city | Tamil Nadu | India | 12.72 | 79.18 | 830 | 45713 |
| Onnya-Tërdë | city | Sakha (Yakutiya) | Russia | 66.22 | 114.23 | 879 | 0 |
| Onnyues-Tërdë | city | Sakha (Yakutiya) | Russia | 66.22 | 114.23 | 879 | 0 |
| Onnzelo | city | Cuvette | Congo | -0.91 | 16.23 | 1030 | 0 |
| Onnāram | city | Andhra Pradesh | India | 18.50 | 79.11 | 944 | 102114 |
| Onnās | city | Rajasthan | India | 26.19 | 73.90 | 1007 | 22836 |