NISN
| Acronym | Definition |
|---|---|
| NISN | NASA Integrated Services Network |
| NISN | Nomor Induk Siswa Nasional (Indonesian: National Student Parent Number; Department of National Education) |
| NISN | Neuraminidase Inhibitor Susceptibility Network |
| NISN | National Immigrant Solidarity Network (South Pasadena, CA) |
| NISN | Nordic Irish Studies Network (University of Tromsø; Norway) |
| NISN | National Information Sharing Network (New Jersey) |
| NISN | National Irrigation Science Network (est. 1999) |