NPSN
| Acronym | Definition |
|---|---|
| NPSN | Nomor Pokok Sekolah Nasional (Indonesian: Number of the National School; school identification code) |
| NPSN | Nazm Pooyan Sanat Novin (Iranian consulting firm) |
| NPSN | NAS Processing System Network |
| NPSN | National Police Support Network Inc. |
| NPSN | Nordic Phylogenetic Systematics Network |