| 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 |