| Abbreviation | Definition |
|---|---|
| OOR | Mooraberree, Queensland, Australia |
| OORQ | Rostaq, Oman |
| OOSA | Salalah International, Oman |
| OOSH | Sohar, Oman |
| OOSQ | Saiq, Oman |
| OOSR | Sur, Oman |
| OOTH | Thumrait, Oman |
| OOYB | Yibal, Oman |
| OPA | Kopasker, Iceland |
| OPAB | Abbottabad, Pakistan |
| OPB | Open Bay, Papua New Guinea |
| OPBG | Bhagtanwala, Pakistan |
| OPBL | Bela, Pakistan |
| OPBN | Bannu, Pakistan |
| OPBR | Bahawalnagar, Pakistan |
| OPBW | Bahawalpure, Pakistan |
| OPCH | Chitral, Pakistan |
| OPCL | Chilas, Pakistan |
| OPCR | Chachro, Pakistan |
| OPCT | Chirat Air Base, Pakistan |