SISN
| Acronym | Definition |
|---|---|
| SISN | Società Italiana di Scienze Naturali (Italian: Italian Society of Natural Sciences) |
| SISN | System and Information Sciences Notes (publication) |
| SISN | Società Italiana per Gli Screening Neonatali |
| SISN | Science Information Systems Newsletter (US NASA) |
| SISN | Società Italiana di Spettroscopia Neutronica (Italian: Italian Society of Neutron Spectroscopy) |
| SISN | Starfleet Italy Sim News (Star Trek) |
| SISN | Studies in Special Needs (education course; various universities) |