| Abbreviation | Definition |
|---|---|
| SFC | Society for Cryobiology |
| SFCF | Samoyed Fanciers of Central Florida |
| SFEC | Specialization and Further Education Committee (of the RCVS) |
| SFT | Society for Theriogenology |
| SGAH | Spring Gully Animal Hospital |
| SGM | Society for General Microbiology |
| SGV | Society of Greyhound Veterinarians |
| SHAG | Shake, Hold, And Groom |
| SHEFC | Scottish Higher Education Funding Council |
| SHOT | Stock Horse Of Texas |
| SHR | Started Hunting Retriever |
| SICB | Society for Integrative and Comparative Biology |
| SIDI | Societa Italiana di Ippologia Italian Association of Equine Practitioners |
| SIGNAL | Stream Invertebrate Grade Number Average Level |
| SIVELP | Sindacato Italiano Veterinari Liberi Professionisti (Italy) |
| SIVEMP | Sindacato Italiano Veterinari di Medicina Pubblica (Italy) |
| SJBF | South Jetty Bird Flat |
| SKK | Svenska Kennelklubben (Swedish Kennel Club) |
| SKSAVA | Slovakian Small Animal Veterinary Association |
| SLVA | Southeast Louisiana Veterinary Association |