ALPO
| 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 |