| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ορά | city | Larnaka | Cyprus | 34.86 | 33.20 | 1669 | 953 |
| Οράλ | city | Batys Qazaqstan | Kazakhstan | 51.23 | 51.37 | 108 | 72819 |
| Οράν | city | Oran | Algeria | 35.69 | -0.64 | 364 | 89447 |
| Οράνιεστατ | city | Aruba | 12.52 | -70.03 | 45 | 37514 | |
| Οράνιεστατ | city | Netherlands | 17.47 | -62.98 | 0 | 2737 | |
| Οράντεα | city | Bihor | Romania | 47.07 | 21.93 | 830 | 138156 |
| Ορέβιστα | city | Kentriki Makedonia | Greece | 41.04 | 22.58 | 830 | 3323 |
| Ορέσκεια | city | Kentriki Makedonia | Greece | 40.86 | 23.64 | 370 | 1516 |
| Ορέστειο | city | Peloponnisos | Greece | 37.42 | 22.12 | 1246 | 3869 |
| Ορέστειον | city | Peloponnisos | Greece | 37.42 | 22.12 | 1246 | 3869 |
| Οραιόβιτσα | city | Kentriki Makedonia | Greece | 41.04 | 22.58 | 830 | 3323 |
| Οργάνη | city | Anatoliki Makedonia kai Thraki | Greece | 41.25 | 25.68 | 1922 | 1308 |
| Ορεβίτσα | city | Kentriki Makedonia | Greece | 41.04 | 22.58 | 830 | 3323 |
| Ορεινή | city | Kentriki Makedonia | Greece | 41.20 | 23.59 | 2083 | 9530 |
| Ορεινή | city | Dytiki Ellada | Greece | 37.87 | 21.85 | 3349 | 1233 |
| Ορεινή | city | Thessalia | Greece | 39.44 | 21.34 | 3349 | 227 |
| Ορεινή Μελιγού | city | Peloponnisos | Greece | 37.36 | 22.66 | 2772 | 1192 |
| Ορεινό | city | Ipeiros | Greece | 39.97 | 20.34 | 2050 | 345 |
| Ορεινό | city | Kriti | Greece | 35.08 | 25.91 | 2509 | 2383 |
| Ορεινό Κορακοβούνι | city | Peloponnisos | Greece | 37.30 | 22.76 | 1669 | 2229 |
| Ορεινόν | city | Ipeiros | Greece | 39.97 | 20.34 | 2050 | 345 |
| Ορεινόν | city | Kriti | Greece | 35.08 | 25.91 | 2509 | 2383 |
| Ορεινόν Κορακοβούνιον | city | Peloponnisos | Greece | 37.30 | 22.76 | 1669 | 2229 |
| Ορεστιάδα | city | Anatoliki Makedonia kai Thraki | Greece | 41.51 | 26.53 | 72 | 11967 |
| Ορεστιάς | city | Anatoliki Makedonia kai Thraki | Greece | 41.51 | 26.53 | 72 | 11967 |
| Ορεστινή | city | Anatoliki Makedonia kai Thraki | Greece | 41.23 | 24.82 | 1991 | 449 |
| Ορεόβιτσα | city | Kentriki Makedonia | Greece | 41.04 | 22.58 | 830 | 3323 |
| Ορθές | city | Kriti | Greece | 35.34 | 24.70 | 1669 | 3814 |
| Ορθοβούνι | city | Thessalia | Greece | 39.76 | 21.47 | 1879 | 1213 |
| Ορθοβούνιον | city | Thessalia | Greece | 39.76 | 21.47 | 1879 | 1213 |
| Ορθολίθι | city | Dytiki Ellada | Greece | 38.05 | 22.01 | 2565 | 1043 |
| Ορθολίθιον | city | Dytiki Ellada | Greece | 38.05 | 22.01 | 2565 | 1043 |
| Ορθονιές | city | Ionia Nisia | Greece | 37.85 | 20.69 | 1669 | 2290 |
| Ορθονιαί | city | Ionia Nisia | Greece | 37.85 | 20.69 | 1669 | 2290 |
| Ορθούνι | city | Kriti | Greece | 35.40 | 23.90 | 1761 | 2099 |
| Ορθούνιον | city | Kriti | Greece | 35.40 | 23.90 | 1761 | 2099 |
| Οριουέλα | city | Comunitat Valenciana | Spain | 38.08 | -0.94 | 65 | 30480 |
| Οριόλ | city | Orlovskaya Oblast' | Russia | 52.97 | 36.08 | 830 | 130019 |
| Ορλάντο | city | Florida | United States | 28.54 | -81.38 | 111 | |
| Ορλεάνη | city | Centre-Val de Loire | France | 47.90 | 1.90 | 311 | 159255 |
| Ορμάν | city | Dytiki Makedonia | Greece | 40.52 | 21.21 | 2509 | 12323 |
| Ορμάνι | city | Larnaka | Cyprus | 34.96 | 33.65 | 3 | 27428 |
| Ορμένιο | city | Anatoliki Makedonia kai Thraki | Greece | 41.72 | 26.22 | 134 | 2266 |
| Ορμένιον | city | Anatoliki Makedonia kai Thraki | Greece | 41.72 | 26.22 | 134 | 2266 |
| Ορμίδεια | city | Larnaka | Cyprus | 34.99 | 33.78 | 45 | 9456 |
| Ορμύλια | city | Kentriki Makedonia | Greece | 40.29 | 23.54 | 55 | 3745 |
| Ορνέ | city | Kriti | Greece | 35.15 | 24.66 | 830 | 2179 |
| Ορνίθι | city | Ammochostos | Cyprus | 35.16 | 33.57 | 219 | 1121 |
| Οροβάς | city | Peloponnisos | Greece | 36.94 | 22.21 | 997 | 2936 |
| Οροπέδιο | city | Anatoliki Makedonia kai Thraki | Greece | 41.34 | 24.25 | 2063 | 2536 |
| Οροπέδιο | city | Dytiki Makedonia | Greece | 40.12 | 21.31 | 2509 | 1223 |
| Οροπέδιον | city | Anatoliki Makedonia kai Thraki | Greece | 41.34 | 24.25 | 2063 | 2536 |
| Οροπέδιον | city | Dytiki Makedonia | Greece | 40.12 | 21.31 | 2509 | 1223 |
| Ορούντα | city | Lefkosia | Cyprus | 35.10 | 33.09 | 1092 | 6330 |
| Ορτάκιοι | city | Lefkosia | Cyprus | 35.20 | 33.34 | 383 | 55516 |
| Ορτιζέι | city | Trentino-Sudtirol | Italy | 46.57 | 11.67 | 5029 | 7491 |
| Ορφάνι | city | Anatoliki Makedonia kai Thraki | Greece | 40.78 | 23.95 | 232 | 1720 |
| Ορφάνιο | city | Anatoliki Makedonia kai Thraki | Greece | 40.78 | 23.95 | 232 | 1720 |
| Ορφανά | city | Thessalia | Greece | 39.40 | 22.22 | 396 | 1939 |
| Ορφανό | city | Anatoliki Makedonia kai Thraki | Greece | 40.98 | 24.79 | 42 | 4400 |
| Ορφανόν | city | Anatoliki Makedonia kai Thraki | Greece | 40.98 | 24.79 | 42 | 4400 |
| Ορχομενός | city | Sterea Ellada | Greece | 38.49 | 22.98 | 328 | 8029 |
| Ορχομενός | city | Peloponnisos | Greece | 37.72 | 22.32 | 2509 | 1833 |