UpAlphabetical listing of Places in North Eastern Province
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Oddaimavadi | city | North Eastern Province | Sri Lanka | 7.92 | 81.52 | 3 | 20095 |
| Oddamavadi | city | North Eastern Province | Sri Lanka | 7.92 | 81.52 | 3 | 20095 |
| Oddankulam | city | North Eastern Province | Sri Lanka | 9.12 | 80.27 | 75 | 6165 |
| Oddaruthakulam | city | North Eastern Province | Sri Lanka | 9.13 | 80.33 | 104 | 6109 |
| Oddaruttakulam | city | North Eastern Province | Sri Lanka | 9.13 | 80.33 | 104 | 6109 |
| Oddichuddan | city | North Eastern Province | Sri Lanka | 9.15 | 80.65 | 114 | 6220 |
| Oddiyadimady | city | North Eastern Province | Sri Lanka | 8.78 | 81.08 | 16 | 11639 |
| Odduchuddan | city | North Eastern Province | Sri Lanka | 9.15 | 80.65 | 114 | 6220 |
| Oddumadu | city | North Eastern Province | Sri Lanka | 8.13 | 81.43 | 9 | 11528 |
| Oddupeli | city | North Eastern Province | Sri Lanka | 9.65 | 80.25 | 3 | 38481 |
| Oddusudan | city | North Eastern Province | Sri Lanka | 9.15 | 80.65 | 114 | 6220 |
| Oddusuddan | city | North Eastern Province | Sri Lanka | 9.15 | 80.65 | 114 | 6220 |
| Okanda | city | North Eastern Province | Sri Lanka | 6.65 | 81.77 | 29 | 7231 |
| Okanta | city | North Eastern Province | Sri Lanka | 6.65 | 81.77 | 29 | 7231 |
| Olaithoduvai | city | North Eastern Province | Sri Lanka | 9.03 | 79.83 | 19 | 4871 |
| Olaittoduvai | city | North Eastern Province | Sri Lanka | 9.03 | 79.83 | 19 | 4871 |
| Olaittoduvl | city | North Eastern Province | Sri Lanka | 9.03 | 79.83 | 19 | 4871 |
| Olimadu | city | North Eastern Province | Sri Lanka | 7.67 | 81.57 | 154 | 22886 |
| Olimadu | city | North Eastern Province | Sri Lanka | 9.15 | 80.48 | 127 | 6283 |
| Oliyanyaya | city | North Eastern Province | Sri Lanka | 7.22 | 81.65 | 429 | 15654 |
| Ollimadu | city | North Eastern Province | Sri Lanka | 8.85 | 79.97 | 13 | 8847 |
| Olukkulam | city | North Eastern Province | Sri Lanka | 8.67 | 80.40 | 239 | 8620 |
| Olukkulam | city | North Eastern Province | Sri Lanka | 9.10 | 80.10 | 3 | 7511 |
| Olumadu | city | North Eastern Province | Sri Lanka | 8.67 | 80.32 | 177 | 8046 |
| Olumadu | city | North Eastern Province | Sri Lanka | 9.02 | 80.67 | 180 | 7860 |
| Olumadu | city | North Eastern Province | Sri Lanka | 9.15 | 80.48 | 127 | 6283 |
| Oluvil | city | North Eastern Province | Sri Lanka | 7.28 | 81.85 | 13 | 29867 |
| Omantai | city | North Eastern Province | Sri Lanka | 8.87 | 80.50 | 285 | 8240 |
| Omuna | city | North Eastern Province | Sri Lanka | 7.62 | 81.27 | 465 | 14304 |
| Ondachchimadam | city | North Eastern Province | Sri Lanka | 7.50 | 81.80 | 3 | 9776 |
| Orumulacholai | city | North Eastern Province | Sri Lanka | 7.80 | 81.58 | 52 | 31350 |
| Othiyamalai | city | North Eastern Province | Sri Lanka | 9.05 | 80.70 | 131 | 7024 |
| Othiyankuda-aru | city | North Eastern Province | Sri Lanka | 7.60 | 81.62 | 334 | 23095 |
| Otiyamalai | city | North Eastern Province | Sri Lanka | 9.05 | 80.70 | 131 | 7024 |
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