| Acronym | Definition |
|---|
| PPSN | Parallel Problem Solving from Nature (International Conference) |
| PPSN | Pp Sequence Number |
| PPSN | Public Packet Switched Network |
| PPSN | Personal Public Service Number (Department of Social and Family Affairs; Ireland) |
| PPSN | Parasitology and Public Health Society of Nigeria |
| PPSN | Public Packet-Switched Network |
| PPSN | Present Position |
| PPSN | Pre-Plant Soil Nitrate Test |
| PPSN | Public Policy and Service Network (UK) |
