| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ochyró | city | Anatoliki Makedonia kai Thraki | Greece | 41.30 | 23.85 | 1860 | 2065 |
| Ochyrón | city | Anatoliki Makedonia kai Thraki | Greece | 41.30 | 23.85 | 1860 | 2065 |
| Ofrynio | city | Anatoliki Makedonia kai Thraki | Greece | 40.80 | 23.92 | 377 | 1748 |
| Ofrínion | city | Anatoliki Makedonia kai Thraki | Greece | 40.80 | 23.92 | 377 | 1748 |
| Oisyme | city | Anatoliki Makedonia kai Thraki | Greece | 40.84 | 24.30 | 3 | 5055 |
| Oiákion | city | Anatoliki Makedonia kai Thraki | Greece | 41.08 | 24.95 | 62 | 10403 |
| Okchilar | city | Anatoliki Makedonia kai Thraki | Greece | 41.09 | 24.79 | 219 | 8304 |
| Okhirón | city | Anatoliki Makedonia kai Thraki | Greece | 41.30 | 23.85 | 1860 | 2065 |
| Olajak | city | Anatoliki Makedonia kai Thraki | Greece | 41.10 | 24.53 | 2020 | 1456 |
| Olvio | city | Anatoliki Makedonia kai Thraki | Greece | 41.03 | 24.80 | 49 | 3428 |
| Olvion | city | Anatoliki Makedonia kai Thraki | Greece | 41.03 | 24.80 | 49 | 3428 |
| Olvion | city | Anatoliki Makedonia kai Thraki | Greece | 41.02 | 24.81 | 39 | 3400 |
| Olá | city | Anatoliki Makedonia kai Thraki | Greece | 41.17 | 24.38 | 1669 | 658 |
| Ombalár | city | Anatoliki Makedonia kai Thraki | Greece | 40.86 | 25.94 | 6 | 17004 |
| Oraío | city | Anatoliki Makedonia kai Thraki | Greece | 41.27 | 24.83 | 1945 | 1130 |
| Oraíon | city | Anatoliki Makedonia kai Thraki | Greece | 41.27 | 24.83 | 1945 | 1130 |
| Orestiada | city | Anatoliki Makedonia kai Thraki | Greece | 41.51 | 26.53 | 72 | 11967 |
| Orestias | city | Anatoliki Makedonia kai Thraki | Greece | 41.51 | 26.53 | 72 | 11967 |
| Orestini | city | Anatoliki Makedonia kai Thraki | Greece | 41.23 | 24.82 | 1991 | 449 |
| Orfani | city | Anatoliki Makedonia kai Thraki | Greece | 40.78 | 23.95 | 232 | 1720 |
| Orfanon | city | Anatoliki Makedonia kai Thraki | Greece | 40.98 | 24.79 | 42 | 4400 |
| Orfanó | city | Anatoliki Makedonia kai Thraki | Greece | 40.98 | 24.79 | 42 | 4400 |
| Orfánio | city | Anatoliki Makedonia kai Thraki | Greece | 40.78 | 23.95 | 232 | 1720 |
| Orfánion | city | Anatoliki Makedonia kai Thraki | Greece | 40.78 | 23.95 | 232 | 1720 |
| Organi | city | Anatoliki Makedonia kai Thraki | Greece | 41.25 | 25.68 | 1922 | 1308 |
| Organjilar | city | Anatoliki Makedonia kai Thraki | Greece | 40.93 | 24.71 | 39 | 6154 |
| Organjion | city | Anatoliki Makedonia kai Thraki | Greece | 41.10 | 24.29 | 830 | 7314 |
| Organjí | city | Anatoliki Makedonia kai Thraki | Greece | 41.10 | 24.29 | 830 | 7314 |
| Organtzi | city | Anatoliki Makedonia kai Thraki | Greece | 41.10 | 24.29 | 830 | 7314 |
| Orménio | city | Anatoliki Makedonia kai Thraki | Greece | 41.72 | 26.22 | 134 | 2266 |
| Orménion | city | Anatoliki Makedonia kai Thraki | Greece | 41.72 | 26.22 | 134 | 2266 |
| Oropedhion | city | Anatoliki Makedonia kai Thraki | Greece | 41.34 | 24.25 | 2063 | 2536 |
| Oropedio | city | Anatoliki Makedonia kai Thraki | Greece | 41.34 | 24.25 | 2063 | 2536 |
| Oropedion | city | Anatoliki Makedonia kai Thraki | Greece | 41.34 | 24.25 | 2063 | 2536 |
| Osenitsa | city | Anatoliki Makedonia kai Thraki | Greece | 41.37 | 24.24 | 1925 | 947 |
| Osmanitsa | city | Anatoliki Makedonia kai Thraki | Greece | 41.11 | 24.09 | 141 | 12834 |
| Osmanlí | city | Anatoliki Makedonia kai Thraki | Greece | 40.88 | 24.19 | 351 | 5393 |
| Ostítsa | city | Anatoliki Makedonia kai Thraki | Greece | 41.41 | 24.16 | 2040 | 374 |
| Otmanlí | city | Anatoliki Makedonia kai Thraki | Greece | 41.01 | 25.37 | 42 | 4239 |
| Ovajík | city | Anatoliki Makedonia kai Thraki | Greece | 41.15 | 24.48 | 3704 | 392 |
| Ovatzik | city | Anatoliki Makedonia kai Thraki | Greece | 41.15 | 24.48 | 3704 | 392 |