SN
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| SN | SuperNova | - | Atmospheric Research Center |
| SN | Senegal (ISO 3166 Digram) - Singapore (FIPS 10-4 Country Code) - Snow (METAR Code) - SuperNova-Screen Name | - | Astronomy |
| SN | Shona Language (ISO 639-1 Code) | - | Astronomy |
| SN | Tin (Latin Stannum) | - | Astronomy |