| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oon-dong | city | P'yongyang | Korea, Dem. Peoples Rep. of (North) | 38.85 | 125.85 | 127 | 4996 |
| Oon-gol | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 40.58 | 129.02 | 830 | 27771 |
| Oona | city | Limpopo | South Africa | -22.55 | 30.17 | 1807 | 823 |
| Oona River | city | British Columbia | Canada | 53.95 | -130.25 | 3 | 0 |
| Oona Vale | city | Queensland | Australia | -28.47 | 150.07 | 830 | 0 |
| Oonab | city | Northern Cape | South Africa | -29.18 | 18.51 | 2509 | 0 |
| Oonah | city | Tasmania | Australia | -41.24 | 145.62 | 1213 | 177 |
| Oonan | city | Kerman | Iran | 28.54 | 56.79 | 6912 | 1341 |
| Oonanagalawatta | city | Central | Sri Lanka | 7.40 | 80.72 | 3349 | 94749 |
| Oonanagalla | city | Central | Sri Lanka | 7.40 | 80.72 | 3349 | 94749 |
| Oondheer | city | Shabeellaha Dhexe | Somalia | 3.60 | 46.36 | 902 | 2086 |
| Oondheere | city | Jubbada Hoose | Somalia | 0.12 | 42.89 | 36 | 6109 |
| Oondooroo | city | Queensland | Australia | -22.17 | 143.10 | 830 | 0 |
| Oondooroo | city | Queensland | Australia | -22.18 | 143.17 | 830 | 0 |
| Oonegem | city | Vlaanderen | Belgium | 50.95 | 4.00 | 52 | 60820 |
| Oonerohoroho | city | Soloman Islands | -9.23 | 161.24 | 39 | 2349 | |
| Oonetarau Purirohu | city | Soloman Islands | -9.53 | 161.30 | 882 | 3138 | |
| Oong-ni | city | Gyeongnam | Korea, Republic of (South) | 35.30 | 128.14 | 213 | 18474 |
| Oonga | city | Laanemaa | Estonia | 58.82 | 23.73 | 19 | 349 |
| Oongan | city | Bali | Indonesia | -8.63 | 115.23 | 75 | 353170 |
| Oongodhi | city | Oshikoto | Namibia | -17.90 | 17.02 | 3671 | 430 |
| Oonin | city | Nusa Tenggara Timur | Indonesia | -9.82 | 124.36 | 2011 | 11667 |
| Oonley | city | Jubbada Hoose | Somalia | 0.00 | 42.52 | 62 | 4909 |
| Oonoobah | city | Queensland | Australia | -19.30 | 146.82 | 147 | 58126 |
| Oonooie | city | Queensland | Australia | -21.47 | 149.23 | 223 | 886 |
| Oonoomurra | city | Queensland | Australia | -20.74 | 140.67 | 938 | 0 |
| Oonoonagala | city | Central | Sri Lanka | 7.40 | 80.72 | 3349 | 94749 |
| Oonoonba | city | Queensland | Australia | -19.30 | 146.82 | 147 | 58126 |
| Oontoo | city | Queensland | Australia | -27.65 | 141.02 | 150 | 0 |
| Oontoo | city | Queensland | Australia | -21.60 | 141.57 | 912 | 0 |
| Oonurme | city | Ida-Virumaa | Estonia | 59.11 | 26.92 | 200 | 271 |
| Oonurme | city | Jogevamaa | Estonia | 58.79 | 26.26 | 259 | 671 |