| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| OAA (Shank Air Base) | airport | 33.92 | 69.08 | 6890 | 0 | ||
| OAAK (Andkhoi Airport) | airport | 36.94 | 65.21 | 900 | 0 | ||
| OABN (Bamiyan Airport) | airport | 34.82 | 67.82 | 8367 | 0 | ||
| OABT (Bost Airport) | airport | 31.56 | 64.36 | 2464 | 0 | ||
| OACC (Chakcharan Airport) | airport | 34.53 | 65.27 | 7383 | 0 | ||
| OADS (Sardeh Band Airport) | airport | 33.32 | 68.64 | 6971 | 0 | ||
| OADY (Dwyer Airport) | airport | 31.09 | 64.67 | 0 | |||
| OADZ (Darwaz Airport) | airport | 38.46 | 70.88 | 5250 | 0 | ||
| OAEM (Eshkashem Airport) | airport | 36.73 | 71.60 | 0 | |||
| OAFR (Farah Airport) | airport | 32.37 | 62.18 | 3083 | 0 | ||
| OAFZ (Fayzabad Airport) | airport | 37.12 | 70.52 | 3872 | 0 | ||
| OAG (ORANGE) | airport | Australia | -33.38 | 149.13 | 3115 | 0 | |
| OAGA (Ghaziabad Airport) | airport | 34.32 | 70.76 | 0 | |||
| OAGN (Ghazni Airport) | airport | 33.53 | 68.41 | 7150 | 0 | ||
| OAH (SHINDAND) | airport | Afghanistan | 33.39 | 62.26 | 3773 | 0 | |
| OAHN (Khwahan Airport) | airport | 37.88 | 70.22 | 3593 | 0 | ||
| OAHR (HERAT) | airport | Afghanistan | 34.21 | 62.23 | 3206 | 0 | |
| OAI (BAGRAM) | airport | Afghanistan | 34.95 | 69.26 | 4895 | 0 | |
| OAIX (BAGRAM) | airport | Afghanistan | 34.95 | 69.26 | 4895 | 0 | |
| OAJ (ALBERT J ELLIS) | airport | United States | 34.83 | -77.61 | 94 | 0 | |
| OAJL (JALALABAD) | airport | Afghanistan | 34.40 | 70.50 | 1814 | 0 | |
| OAK (METROPOLITAN OAKLAND INTL) | airport | United States | 37.72 | -122.22 | 9 | 0 | |
| OAK COUNTRY RANCH | airport | United States | 35.57 | -120.80 | 1200 | 0 | |
| OAK GLEN RANCH | airport | United States | 33.38 | -95.60 | 430 | 0 | |
| OAK GROVE MCOLF | airport | United States | 35.03 | -77.25 | 27 | 0 | |
| OAK HARBOR | airport | United States | 28.13 | -81.69 | 130 | 0 | |
| OAK HILL HOSPITAL | airport | United States | 38.90 | -82.58 | 730 | 0 | |
| OAK LAKE AIR STRIP | airport | United States | 47.66 | -95.95 | 1204 | 0 | |
| OAK LANDING | airport | United States | 42.30 | -88.38 | 870 | 0 | |
| OAK RIDGE | airport | United States | 43.10 | -77.18 | 540 | 0 | |
| OAK RIDGE | airport | United States | 27.86 | -97.20 | 20 | 0 | |
| OAK RIDGE FARMS | airport | United States | 39.98 | -92.86 | 995 | 0 | |
| OAK RIDGE PLANTATION | airport | United States | 31.37 | -83.75 | 350 | 0 | |
| OAK TREE LANDING | airport | United States | 29.72 | -82.67 | 90 | 0 | |
| OAKA (Gardez Airport) | airport | 33.63 | 69.24 | 7790 | 0 | ||
| OAKB (KABUL INTL) | airport | Afghanistan | 34.57 | 69.21 | 5877 | 0 | |
| OAKBROOK | airport | United States | 42.89 | -88.81 | 840 | 0 | |
| OAKDALE | airport | United States | 37.76 | -120.80 | 234 | 0 | |
| OAKDALE AHP | airport | United States | 40.39 | -80.16 | 1265 | 0 | |
| OAKES FIELD | airport | United States | 39.79 | -85.64 | 935 | 0 | |
| OAKES MUNI | airport | United States | 46.17 | -98.08 | 1335 | 0 | |
| OAKESDALE | airport | United States | 47.14 | -117.24 | 2680 | 0 | |
| OAKEY | airport | Australia | -27.41 | 151.74 | 1335 | 0 | |
| OAKG (Khojaghar Airport) | airport | 37.08 | 69.37 | 1607 | 0 | ||
| OAKHILL AIRPARK | airport | United States | 34.59 | -82.35 | 837 | 0 | |
| OAKLAND CO INTL | airport | United States | 42.67 | -83.42 | 980 | 0 | |
| OAKLAND CONVENTION CENTER | airport | United States | 37.80 | -122.27 | 110 | 0 | |
| OAKLAND SOUTHWEST | airport | United States | 42.50 | -83.62 | 926 | 0 | |
| OAKLAND TROY | airport | United States | 42.54 | -83.18 | 729 | 0 | |
| OAKLEAF | airport | United States | 43.58 | -96.95 | 1625 | 0 | |
| OAKLEY | airport | United States | 36.17 | -86.96 | 400 | 0 | |
| OAKLEY MUNI | airport | United States | 42.23 | -113.88 | 4650 | 0 | |
| OAKLEY MUNI | airport | United States | 39.11 | -100.82 | 3045 | 0 | |
| OAKN (KANDAHAR) | airport | Afghanistan | 31.51 | 65.85 | 3337 | 0 | |
| OAKRIDGE STATE | airport | United States | 43.75 | -122.50 | 1393 | 0 | |
| OAKS | airport | United States | 32.28 | -95.08 | 510 | 0 | |
| OAKS (Khost Airport) | airport | 33.33 | 69.95 | 3756 | 0 | ||
| OAKS HELISTOP | airport | United States | 27.21 | -82.49 | 14 | 0 | |
| OAKVIEW | airport | United States | 34.81 | -82.82 | 1040 | 0 | |
| OAKWOOD HOSPITAL | airport | United States | 42.29 | -83.21 | 597 | 0 | |
| OAL (Cacoal Airport) | airport | -11.50 | -61.45 | 778 | 0 | ||
| OALG (Logar Airport) | airport | 33.99 | 69.02 | 6333 | 0 | ||
| OALL (Lal (Sarjangal) Airport) | airport | 34.51 | 66.30 | 9220 | 0 | ||
| OAM (OAMARU) | airport | New Zealand | -44.97 | 171.08 | 99 | 0 | |
| OAMARU | airport | New Zealand | -44.97 | 171.08 | 99 | 0 | |
| OAMK (Mukur Airport) | airport | 32.88 | 67.85 | 6600 | 0 | ||
| OAMN (MAIMANA) | airport | Afghanistan | 35.93 | 64.76 | 2743 | 0 | |
| OAMS (MAZAR I SHARIF) | airport | Afghanistan | 36.71 | 67.21 | 1284 | 0 | |
| OAN (El Arrayán Airport) | airport | 15.51 | -86.57 | 722 | 0 | ||
| OANL (Nili Airport) | airport | 35.89 | 67.49 | 0 | |||
| OAOG (Urgun Airport) | airport | 32.93 | 69.16 | 7300 | 0 | ||
| OAPJ (Panyab Airport) | airport | 34.40 | 67.02 | 8800 | 0 | ||
| OAQA (Qalat Airport) | airport | 32.13 | 66.90 | 0 | |||
| OAQM (Kron Monajn Airport) | airport | 36.17 | 70.72 | 8420 | 0 | ||
| OAQN (Qala-I-Naw Airport) | airport | 34.99 | 63.12 | 2999 | 0 | ||
| OAR (MARINA MUNI) | airport | United States | 36.68 | -121.76 | 134 | 0 | |
| OART (Rustag Airport) | airport | 37.10 | 69.90 | 4543 | 0 | ||
| OARZ (Razer Airport) | airport | 36.02 | 70.77 | 8269 | 0 | ||
| OAS (Sharana Airstrip) | airport | 33.13 | 68.84 | 7340 | 0 | ||
| OASA (Sharana Airstrip) | airport | 33.13 | 68.84 | 7340 | 0 | ||
| OASD (SHINDAND) | airport | Afghanistan | 33.39 | 62.26 | 3773 | 0 | |
| OASG (SHEBERGHAN) | airport | Afghanistan | 36.75 | 65.91 | 1053 | 0 | |
| OASIS II | city | Tamanrasset | Algeria | 23.94 | 5.12 | 3507 | 0 |
| OASIS RANGER STATION-U.S. GOVERNMENT | airport | United States | 25.86 | -81.03 | 10 | 0 | |
| OASN (Sheghnan Airport) | airport | 37.57 | 71.50 | 6700 | 0 | ||
| OATD (Toorghodi Heliport) | airport | 35.22 | 62.29 | 2600 | 0 | ||
| OATN (Tarin Kowt Airport) | airport | 32.60 | 65.87 | 4429 | 0 | ||
| OATQ (Talolqan Airport) | airport | 36.77 | 69.53 | 2606 | 0 | ||
| OATW (Teh Wareh Airport) | airport | 33.54 | 64.43 | 7370 | 0 | ||
| OAUZ (KONDUZ) | airport | Afghanistan | 36.67 | 68.91 | 1457 | 0 | |
| OAX (XOXOCOTLAN INTL) | airport | Mexico | 17.00 | -96.73 | 4989 | 0 | |
| OAYQ (Yangi Qala Airport) | airport | 37.46 | 69.65 | 1600 | 0 | ||
| OAYW (Yawan Airport) | airport | 37.56 | 70.44 | 5645 | 0 | ||
| OAZ (Camp Bastion Airport) | airport | 31.86 | 64.22 | 2943 | 0 | ||
| OAZI (Camp Bastion Airport) | airport | 31.86 | 64.22 | 2943 | 0 | ||
| OAZJ (Zaranj Airport) | airport | 30.97 | 61.87 | 1572 | 0 |