| Acronym | Definition |
|---|
| ALPO➣Association of Lunar and Planetary Observers |
| ALPO➣Allegheny Portage Railroad National Historic Site (US National Park Service) |
| ALPO➣Alpha Phi Omega (service fraternity) |
| ALPO➣Alumino-Phosphate |
| ALPO➣Assistant Leading Petty Officer |
| ALPO➣Air-Land Project Officer |
| ALPO➣Air-Land Programs Office |