| Abbreviation | Definition |
|---|---|
| XMY | Yam Island, Queensland, Australia |
| XNA | Northwest Arkansas Regional Airport, Bentonville, Arkansas USA |
| XNG | Quang Ngai, Vietnam |
| XNN | Xining, Mainland China |
| XNU | Nouna, Burkina Faso |
| XPA | Pama, Burkina Faso |
| XPK | Pukatawagan, Manitoba, Canada |
| XPL | Comayagua, Honduras |
| XPP | Poplar River, Manitoba, Canada |
| XPR | Pine Ridge, South Dakota USA |
| XPU | West Kuparuk, Alaska USA |
| XQP | Quepos, Costa Rica |
| XQU | Qualicum Airport, Qualicum, British Columbia, Canada |
| XRR | Ross River, Yukon, Canada |
| XRY | La Parra Airport, Jerez de la Frontera, Spain |
| XSC | South Caicos, Turks & Caicos Islands |
| XSD | Tonopah Test Range Airport, Tonopah, Nevada USA |
| XSE | Sebba, Burkina Faso |
| XSI | South Indian Lake, Manitoba, Canada |
| XSM | St. Mary's County Airport, Lexington Park, Maryland USA |