| Abbreviation | Definition |
|---|---|
| OFI | Ouango Fitini, Cote d'Ivoire |
| OFJ | Olafsfjordur, Iceland |
| OFK | Norfolk, Nebraska USA |
| OFU | Ofu, American Samoa |
| OGA | Ogallala, Nebraska USA |
| OGB | Orangeburg, South Carolina USA |
| OGD | Ogden, Utah USA |
| OGE | Ogeranang, Papua New Guinea |
| OGG | Kahului, Maui, Hawaii USA |
| OGL | Ogle, Guyana |
| OGM | Ontonagon County Airport, Ontonagon, Michigan USA |
| OGN | Yonaguni- Jima, Japan |
| OGO | Abengourou, Cote d'Ivoire |
| OGR | Bongor, Chad |
| OGS | Ogdensburg, New York USA |
| OGX | Ouargla, Algeria |
| OGZ | Ordzhonikidze, Russia |
| OH87 | Providence Hospital Heliport, Sandusky, Ohio USA |
| OHA | Ohakea, New Zealand |
| OHD | Ohrid, Macedonia |