| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| OMA (EPPLEY AFLD) | airport | United States | 41.30 | -95.89 | 984 | 0 | |
| OMAA (ABU DHABI INTL) | airport | United Arab Emirates | 24.43 | 54.65 | 88 | 0 | |
| OMAB (Buhasa Airport) | airport | 23.60 | 53.38 | 0 | |||
| OMAC (Asab Airfield) | airport | 23.30 | 54.22 | 0 | |||
| OMAD (BATEEN) | airport | United Arab Emirates | 24.43 | 54.46 | 16 | 0 | |
| OMAF (Futaysi) | airport | 24.38 | 54.32 | 0 | |||
| OMAH (AL HAMRA AUX) | airport | United Arab Emirates | 24.07 | 52.46 | 50 | 0 | |
| OMAJ (JEBEL DHANA) | airport | United Arab Emirates | 24.19 | 52.61 | 43 | 0 | |
| OMAK | airport | United States | 48.46 | -119.52 | 1305 | 0 | |
| OMAL (AL AIN INTL) | airport | United Arab Emirates | 24.26 | 55.61 | 869 | 0 | |
| OMAM (AL DHAFRA) | airport | United Arab Emirates | 24.25 | 54.55 | 77 | 0 | |
| OMANS | airport | United States | 42.92 | -83.06 | 865 | 0 | |
| OMAQ (Qarnayn Airport) | airport | 24.93 | 52.86 | 0 | |||
| OMAR (ARZANAH) | airport | United Arab Emirates | 24.78 | 52.56 | 15 | 0 | |
| OMAR N BRADLEY | airport | United States | 39.46 | -92.43 | 867 | 0 | |
| OMAS (DAS ISLAND) | airport | United Arab Emirates | 25.15 | 52.87 | 12 | 0 | |
| OMAZ (ZIRKU) | airport | United Arab Emirates | 24.86 | 53.08 | 14 | 0 | |
| OMB (OMBOUE HOPITAL) | airport | Gabon | -1.57 | 9.26 | 33 | 0 | |
| OMBOUE HOPITAL | airport | Gabon | -1.57 | 9.26 | 33 | 0 | |
| OMC (ORMOC) | airport | Philippines | 11.06 | 124.57 | 83 | 0 | |
| OMD (ORANJEMUND) | airport | Namibia | -28.58 | 16.45 | 14 | 0 | |
| OMDB (DUBAI INTL) | airport | United Arab Emirates | 25.25 | 55.36 | 62 | 0 | |
| OMDM (MINHAD AB) | airport | United Arab Emirates | 25.03 | 55.37 | 165 | 0 | |
| OMDW (Al Maktoum International Airport) | airport | 24.90 | 55.16 | 114 | 0 | ||
| OME (NOME) | airport | United States | 64.51 | -165.45 | 37 | 0 | |
| OMEGA 1 | airport | United States | 38.84 | -107.82 | 6409 | 0 | |
| OMF (KING HUSSEIN) | airport | Jordan | 32.36 | 36.26 | 2240 | 0 | |
| OMFJ (FUJAIRAH INTL) | airport | United Arab Emirates | 25.11 | 56.32 | 152 | 0 | |
| OMG (Omega Airport) | airport | -18.03 | 22.19 | 3346 | 0 | ||
| OMH | airport | United States | 35.48 | -97.50 | 1240 | 0 | |
| OMH (UROMIYEH) | airport | Iran | 37.67 | 45.07 | 4343 | 0 | |
| OMI (OMIDIYEH) | airport | Iran | 30.84 | 49.53 | 85 | 0 | |
| OMIDIYEH | airport | Iran | 30.84 | 49.53 | 85 | 0 | |
| OMK (OMAK) | airport | United States | 48.46 | -119.52 | 1305 | 0 | |
| OML (Omkalai Airport) | airport | -6.18 | 144.96 | 5700 | 0 | ||
| OMM (Marmul Airport) | airport | 18.14 | 55.18 | 925 | 0 | ||
| OMN (Osmanabad Airport) | airport | 18.28 | 76.06 | 2277 | 0 | ||
| OMNI | airport | United States | 30.35 | -92.04 | 50 | 0 | |
| OMNI | airport | United States | 30.50 | -91.30 | 24 | 0 | |
| OMNI AIRPARK | airport | United States | 42.23 | -76.85 | 970 | 0 | |
| OMNI MOUTON COVE | airport | United States | 29.89 | -92.17 | 10 | 0 | |
| OMNIFLIGHT HELICOPTERS | airport | United States | 42.62 | -89.03 | 808 | 0 | |
| OMO (MOSTAR) | airport | Bosnia & Herzegovina | 43.28 | 17.85 | 156 | 0 | |
| OMR (ORADEA) | airport | Romania | 47.03 | 21.90 | 465 | 0 | |
| OMRK (RAS AL KHAIMAH INTL) | airport | United Arab Emirates | 25.61 | 55.94 | 102 | 0 | |
| OMS (OMSK) | airport | Russia | 54.97 | 73.31 | 311 | 0 | |
| OMSJ (SHARJAH INTL) | airport | United Arab Emirates | 25.33 | 55.52 | 111 | 0 | |
| OMSK | airport | Russia | 54.97 | 73.31 | 311 | 0 | |
| OMUQ (Umm Al Quwain) | airport | 25.58 | 55.65 | 0 | |||
| OMY (Preah Vinhear Airport) | airport | 13.76 | 104.97 | 350 | 0 |