| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Oamushiyah | city | Muhafazat Ninawa | Iraq | 36.1908333 | 42.2683333 | 938 | 5317 |
| Oasirka | city | Muhafazat Dahuk | Iraq | 37.2183333 | 43.8494444 | 4852 | 4051 |
| Old Baba | city | Muhafazat at Ta'mim | Iraq | 35.5347222 | 44.3505556 | 1066 | 14026 |
| Omar Agha | city | Muhafazat Dahuk | Iraq | 37.1502778 | 42.7844444 | 1686 | 5548 |
| Omarasur | city | Muhafazat Arbil | Iraq | 36.0358333 | 44.1716667 | 1932 | 8761 |
| Omarsinan | city | Muhafazat Ninawa | Iraq | 36.6480556 | 43.6875 | 1453 | 5583 |
| Omolgasr | city | Muhafazat al Basrah | Iraq | 30.0341667 | 47.9294444 | 32 | 11515 |
| Ora | city | Muhafazat Dahuk | Iraq | 37.2791667 | 43.3569444 | 4977 | 5433 |
| Orman | city | Muhafazat Dahuk | Iraq | 37.2197222 | 43.3766667 | 3927 | 5501 |
| Orman Dauda | city | Muhafazat Dahuk | Iraq | 37.2236111 | 43.4013889 | 4393 | 5501 |
| Orta Kharab | city | Muhafazat Ninawa | Iraq | 36.4208333 | 43.2316667 | 994 | 5300 |
| Orta Kharāb | city | Muhafazat Ninawa | Iraq | 36.4208333 | 43.2316667 | 994 | 5300 |
| Ourailu | city | Muhafazat Diyala | Iraq | 34.6066667 | 45.4922222 | 853 | 5701 |
| Owja | city | Muhafazat Salah ad Din | Iraq | 34.5333333 | 43.7333333 | 226 | 3556 |
| Ozier | city | Muhafazat Maysan | Iraq | 31.3352778 | 47.4213889 | 19 | 3542 |
| Ozmana | city | Muhafazat Dahuk | Iraq | 37.0586111 | 42.9447222 | 2814 | 5552 |
| Oāmushīyah | city | Muhafazat Ninawa | Iraq | 36.1908333 | 42.2683333 | 938 | 5317 |
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