UpAlphabetical listing of Places in West Sepik
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Oekwanda | city | West Sepik | Papua New Guinea | -3.64 | 141.08 | 974 | 596 |
| Oem | city | West Sepik | Papua New Guinea | -3.29 | 141.01 | 1814 | 490 |
| Ogduruk | city | West Sepik | Papua New Guinea | -4.88 | 141.07 | 6784 | 596 |
| Ogru | city | West Sepik | Papua New Guinea | -3.84 | 141.31 | 830 | 596 |
| Ogru One | city | West Sepik | Papua New Guinea | -3.83 | 141.30 | 830 | 596 |
| Ogru Two | city | West Sepik | Papua New Guinea | -3.85 | 141.28 | 830 | 596 |
| Oksapmin | city | West Sepik | Papua New Guinea | -5.23 | 142.23 | 6709 | 596 |
| Old Ainbai | city | West Sepik | Papua New Guinea | -3.13 | 141.17 | 1742 | 596 |
| Old Akimari | city | West Sepik | Papua New Guinea | -3.60 | 141.08 | 1669 | 596 |
| Old Asor | city | West Sepik | Papua New Guinea | -3.52 | 142.62 | 1046 | 775 |
| Old Buna | city | West Sepik | Papua New Guinea | -3.97 | 141.27 | 830 | 596 |
| Old Einokneri | city | West Sepik | Papua New Guinea | -3.52 | 141.17 | 1669 | 596 |
| Old Epmi | city | West Sepik | Papua New Guinea | -3.32 | 141.11 | 1669 | 596 |
| Old Fongwinam | city | West Sepik | Papua New Guinea | -3.75 | 141.05 | 987 | 602 |
| Old Fugumui | city | West Sepik | Papua New Guinea | -3.23 | 141.40 | 1866 | 596 |
| Old Goiniri | city | West Sepik | Papua New Guinea | -3.28 | 142.05 | 1669 | 596 |
| Old Iafar 3 | city | West Sepik | Papua New Guinea | -3.50 | 141.12 | 1699 | 596 |
| Old Ibagum | city | West Sepik | Papua New Guinea | -3.57 | 141.22 | 1000 | 596 |
| Old Imbrinis | city | West Sepik | Papua New Guinea | -2.95 | 141.38 | 383 | 596 |
| Old Kamberatoro | city | West Sepik | Papua New Guinea | -3.61 | 141.05 | 1669 | 594 |
| Old Musu | city | West Sepik | Papua New Guinea | -2.63 | 141.10 | 403 | 322 |
| Old Paw Paw | city | West Sepik | Papua New Guinea | -3.03 | 141.08 | 895 | 596 |
| Old Pendesi | city | West Sepik | Papua New Guinea | -3.23 | 141.03 | 2611 | 630 |
| Old Pendessi | city | West Sepik | Papua New Guinea | -3.23 | 141.03 | 2611 | 630 |
| Old Simog | city | West Sepik | Papua New Guinea | -3.30 | 141.25 | 974 | 596 |
| Old Waris | city | West Sepik | Papua New Guinea | -3.27 | 141.00 | 1840 | 553 |
| Olul | city | West Sepik | Papua New Guinea | -2.95 | 141.27 | 830 | 596 |
| Omol | city | West Sepik | Papua New Guinea | -3.29 | 141.10 | 1669 | 596 |
| Omol Epmi | city | West Sepik | Papua New Guinea | -3.29 | 141.10 | 1669 | 596 |
| Omombule | city | West Sepik | Papua New Guinea | -3.08 | 141.08 | 1040 | 596 |
| Omula | city | West Sepik | Papua New Guinea | -2.92 | 141.32 | 410 | 596 |
| Onei | city | West Sepik | Papua New Guinea | -2.94 | 141.84 | 9 | 301 |
| Onei | city | West Sepik | Papua New Guinea | -2.95 | 141.15 | 830 | 596 |
| Onepi | city | West Sepik | Papua New Guinea | -2.95 | 141.15 | 830 | 596 |
| Ongabip | city | West Sepik | Papua New Guinea | -4.70 | 141.07 | 1669 | 596 |
| Ori | city | West Sepik | Papua New Guinea | -3.51 | 142.40 | 1702 | 596 |
| Orkwanda | city | West Sepik | Papua New Guinea | -3.64 | 141.08 | 974 | 596 |
| Orutei | city | West Sepik | Papua New Guinea | -3.51 | 142.06 | 1669 | 596 |
| Osima | city | West Sepik | Papua New Guinea | -2.91 | 141.29 | 830 | 596 |
| Osol | city | West Sepik | Papua New Guinea | -2.89 | 141.24 | 830 | 596 |
| Ossima | city | West Sepik | Papua New Guinea | -2.91 | 141.29 | 830 | 596 |
| Ossimor | city | West Sepik | Papua New Guinea | -2.91 | 141.29 | 830 | 596 |
| Otei | city | West Sepik | Papua New Guinea | -3.45 | 142.06 | 1932 | 596 |
| Otemgi | city | West Sepik | Papua New Guinea | -3.48 | 142.03 | 1702 | 596 |
| Otto | city | West Sepik | Papua New Guinea | -3.03 | 142.08 | 3 | 247 |
| Oweniak | city | West Sepik | Papua New Guinea | -3.61 | 141.25 | 1000 | 596 |
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