APSO
| Acronym | Definition |
|---|---|
| APSO | Agency for Personal Service Overseas |
| APSO | Association of Personnel Service Organisations (est. 1977; South Africa) |
| APSO | Asylum Pre-Screening Officer (US DHS) |
| APSO | Appalachian People's Service Organization |
| APSO | Audio Precision System One (audio signal measurement device) |
| APSO | Adaptive Particle Swarm Optimization |
| APSO | Antwerpse Post Sport Olympia (Dutch: Antwerp Olympic Sport Post; sports blog; Belgium) |