SINA
| Acronym | Definition |
|---|---|
| SINA | Sichere Inter-Netzwerk Architektur (German: Secure Inter-Network Architecture; Federal Office for Information Security; Germany) |
| SINA | Singing Insects of North America |
| SINA | Sistema Informativo Nazionale Ambientale (Italian: National Environmental Information System; Italy) |
| SINA | Society for Indecency to Naked Animals (satiric hoax; Alan Abel) |
| SINA | Static Integrated Network Access |
| SINA | Schoolsnet Internet Network Administrator |