| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| OUA (OUAGADOUGOU) | airport | Burkina Faso | 12.35 | -1.51 | 1037 | 0 | |
| OUACHITA COUNTY MEDICAL CENTER | airport | United States | 33.58 | -92.84 | 212 | 0 | |
| OUAGADOUGOU | airport | Burkina Faso | 12.35 | -1.51 | 1037 | 0 | |
| OUANI | airport | Comoros | -12.13 | 44.43 | 62 | 0 | |
| OUARGLA | airport | Algeria | 31.92 | 5.41 | 492 | 0 | |
| OUARZAZATE | airport | Morocco | 30.94 | -6.91 | 3782 | 0 | |
| OUD (ANGADS) | airport | Morocco | 34.79 | -1.92 | 1535 | 0 | |
| OUDTSHOORN | airport | South Africa | -33.61 | 22.19 | 1063 | 0 | |
| OUE (OUESSO) | airport | Congo | 1.62 | 16.04 | 1158 | 0 | |
| OUED IRARA | airport | Algeria | 31.67 | 6.14 | 463 | 0 | |
| OUESSO | airport | Congo | 1.62 | 16.04 | 1158 | 0 | |
| OUG (Ouahigouya Airport) | airport | 13.57 | -2.42 | 1106 | 0 | ||
| OUH (OUDTSHOORN) | airport | South Africa | -33.61 | 22.19 | 1063 | 0 | |
| OUK (Outer Skerries Airport) | airport | 60.43 | -0.75 | 76 | 0 | ||
| OUL (OULU) | airport | Finland | 64.93 | 25.35 | 47 | 0 | |
| OULU | airport | Finland | 64.93 | 25.35 | 47 | 0 | |
| OUM (Oum Hadjer Airport) | airport | 13.28 | 19.71 | 1198 | 0 | ||
| OUN (UNIVERSITY OF OKLAHOMA WESTHEIMER) | airport | United States | 35.25 | -97.47 | 1182 | 0 | |
| OUR (Batouri Airport) | airport | 4.47 | 14.36 | 2152 | 0 | ||
| OUR COMMUNITY HOSPITAL | airport | United States | 36.13 | -77.42 | 113 | 0 | |
| OUR DOMAIN | airport | United States | 39.07 | -75.73 | 65 | 0 | |
| OUR LADY OF LOURDES HOSPITAL | airport | United States | 30.21 | -92.03 | 90 | 0 | |
| OUR LADY OF THE LAKE R.M.C. | airport | United States | 30.40 | -91.10 | 46 | 0 | |
| OUR LADY'S | airport | United States | 39.98 | -74.83 | 18 | 0 | |
| OURICURI | airport | Brazil | -7.88 | -40.09 | 1529 | 0 | |
| OURILANDIA DO NORTE | airport | Brazil | -6.76 | -51.05 | 751 | 0 | |
| OURINHOS | airport | Brazil | -22.97 | -49.91 | 1532 | 0 | |
| OUS (Ourinhos Airport) | airport | -22.97 | -49.91 | 1532 | 0 | ||
| OUSEL FALLS | airport | United States | 45.25 | -111.33 | 6600 | 0 | |
| OUT (Bousso Airport) | airport | 10.48 | 16.72 | 1099 | 0 | ||
| OUTAGAMIE CO RGNL | airport | United States | 44.26 | -88.52 | 918 | 0 | |
| OUTBACK | airport | United States | 34.23 | -101.46 | 3286 | 0 | |
| OUTBACK RANCH AIRSTRIP | airport | United States | 33.85 | -113.57 | 1980 | 0 | |
| OUTER BANKS | airport | United States | 35.98 | -75.65 | 30 | 0 | |
| OUTLAW FLD | airport | United States | 36.62 | -87.41 | 550 | 0 | |
| OUVEA | airport | New Caledonia | -20.64 | 166.57 | 23 | 0 | |
| OUZ (Tazadit Airport) | airport | 22.76 | -12.48 | 1129 | 0 | ||
| OUZINKIE | airport | United States | 57.92 | -152.50 | 55 | 0 |