| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| OK Landing | city | Louisiana | United States | 31.77 | -91.56 | 49 | |
| OK Village | city | Queensland | Australia | -10.95 | 142.70 | 0 | 251 |
| OKA (NAHA) | airport | Japan | 26.20 | 127.65 | 12 | 0 | |
| OKAJ (Ahmed Al Jaber Air Base) | airport | 28.93 | 47.79 | 409 | 0 | ||
| OKANOGAN LEGION | airport | United States | 48.36 | -119.57 | 1042 | 0 | |
| OKARA | airport | Pakistan | 30.74 | 73.36 | 568 | 0 | |
| OKARCHE | airport | United States | 35.73 | -97.97 | 1239 | 0 | |
| OKAS (ALI AL SALEM AB) | airport | Kuwait | 29.35 | 47.52 | 472 | 0 | |
| OKAYAMA | airport | Japan | 34.76 | 133.86 | 806 | 0 | |
| OKB (Orchid Beach Airport) | airport | -24.96 | 153.32 | 71 | 0 | ||
| OKBA IBN NAFA | airport | Libya | 32.47 | 11.90 | 253 | 0 | |
| OKBK (KUWAIT INTL) | airport | Kuwait | 29.23 | 47.97 | 206 | 0 | |
| OKC (WILL ROGERS WORLD) | airport | United States | 35.39 | -97.60 | 1295 | 0 | |
| OKD (SAPPORO) | airport | Japan | 43.12 | 141.38 | 25 | 0 | |
| OKDI (UDAIRI AAF) | airport | Kuwait | 29.70 | 47.44 | 430 | 0 | |
| OKE (OKIERABU) | airport | Japan | 27.43 | 128.70 | 101 | 0 | |
| OKECIE | airport | Poland | 52.17 | 20.97 | 362 | 0 | |
| OKEECHOBEE CO | airport | United States | 27.26 | -80.85 | 34 | 0 | |
| OKEELANTA | airport | United States | 26.58 | -80.76 | 14 | 0 | |
| OKEFENOKEE | airport | United States | 30.74 | -82.13 | 125 | 0 | |
| OKEMAH FLYING FIELD | airport | United States | 35.43 | -96.28 | 867 | 0 | |
| OKF (Okaukuejo Airport) | airport | -19.15 | 15.91 | 3911 | 0 | ||
| OKG (Okoyo Airport) | airport | -1.45 | 15.07 | 1415 | 0 | ||
| OKH (COTTESMORE) | airport | United Kingdom | 52.74 | -0.65 | 461 | 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 | |
| OKK (KOKOMO MUNI) | airport | United States | 40.53 | -86.06 | 830 | 0 | |
| OKL (Oksibil Airport) | airport | -4.91 | 140.63 | 4315 | 0 | ||
| OKLAHOMA NATIONAL GUARD | airport | United States | 35.50 | -97.47 | 1190 | 0 | |
| OKM (OKMULGEE RGNL) | airport | United States | 35.67 | -95.95 | 720 | 0 | |
| OKMULGEE RGNL | airport | United States | 35.67 | -95.95 | 720 | 0 | |
| OKN (OKONDJA) | airport | Gabon | -0.67 | 13.67 | 1325 | 0 | |
| OKNB (Ras al-Qulayah Naval Base Heliport) | airport | 28.86 | 48.27 | 30 | 0 | ||
| OKO (YOKOTA AB) | airport | Japan | 35.75 | 139.35 | 463 | 0 | |
| OKOLONA MUNI RICH STOVALL FLD | airport | United States | 34.02 | -88.73 | 335 | 0 | |
| OKOLONA PLANTATION | airport | United States | 39.48 | -75.70 | 61 | 0 | |
| OKONDJA | airport | Gabon | -0.67 | 13.67 | 1325 | 0 | |
| OKP (Oksapmin Airport) | airport | -5.23 | 142.23 | 5140 | 0 | ||
| OKQ (Okaba Airport) | airport | -8.09 | 139.72 | 23 | 0 | ||
| OKR (Yorke Island Airport) | airport | -9.75 | 143.41 | 10 | 0 | ||
| OKSYWIE | airport | Poland | 54.58 | 18.52 | 144 | 0 | |
| OKT (Oktyabrskiy Airport) | airport | 54.44 | 53.39 | 377 | 0 | ||
| OKTIBBEHA | airport | United States | 33.50 | -88.68 | 250 | 0 | |
| OKTIBBEHA COUNTY HOSPITAL | airport | United States | 33.48 | -88.82 | 265 | 0 | |
| OKU (Mokuti Lodge Airport) | airport | -18.81 | 17.06 | 3665 | 0 | ||
| OKUSHIRI | airport | Japan | 42.07 | 139.43 | 161 | 0 | |
| OKV (Okao Airport) | airport | -5.56 | 141.03 | 450 | 0 | ||
| OKY (OAKEY) | airport | Australia | -27.41 | 151.74 | 1335 | 0 |