CNSN
| Acronym | Definition |
|---|---|
| CNSN | Canadian National Seismograph Network |
| CNSN | Centro Nacional de Seguridad Nuclear (Spanish: National Center for Nuclear Safety; Cuba) |
| CNSN | Certified Nutrition Support Nurse |
| CNSN | Client Service for NetWare |
| CNSN | Central Nervous System Neoplasms |
| CNSN | Czech National Seismological Network |