| Acronym | Definition |
|---|
| PPSO➣Personal Property Shipping Office |
| PPSO➣Programme and Project Support Office |
| PPSO➣Parallel Particle Swarm Optimization (computer science) |
| PPSO➣Project or Programme Support Office |
| PPSO➣Political Philosophy and Social Ontology (workshop; University of Groningen; Netherlands) |
| PPSO➣Professional Pharmacy Students Organization (est. 2000) |