| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| OKA (NAHA) | airport | Japan | 26.20 | 127.65 | 12 | 0 | |
| OKAYAMA | airport | Japan | 34.76 | 133.86 | 806 | 0 | |
| OKD (SAPPORO) | airport | Japan | 43.12 | 141.38 | 25 | 0 | |
| OKE (OKIERABU) | airport | Japan | 27.43 | 128.70 | 101 | 0 | |
| OKI | airport | Japan | 36.18 | 133.32 | 311 | 0 | |
| OKI (OKI) | airport | Japan | 36.18 | 133.32 | 311 | 0 | |
| OKIERABU | airport | Japan | 27.43 | 128.70 | 101 | 0 | |
| OKJ (OKAYAMA) | airport | Japan | 34.76 | 133.86 | 806 | 0 | |
| OKO (YOKOTA AB) | airport | Japan | 35.75 | 139.35 | 463 | 0 | |
| OKUSHIRI | airport | Japan | 42.07 | 139.43 | 161 | 0 |