| Abbreviation | Definition |
|---|---|
| SHPL | Shaker Heights Public Library |
| SHPL | SmartThings Hubitat Portability Library |
| SHPL | St Helena Public Library |
| SHPL | Sterling Heights Public Library |
| SHRL | Sara Hightower Regional Library |
| SHRLS | Sara Hightower Regional Library System |
| SHSL | Science Health Science Library |
| SIAL | Serials In Australian Libraries |
| SIBL | Science Industry and Business Library |
| sic | sic erat scriptum (thus it as written[Lat.]) |
| SIC | Spelling In Context |
| SICG | Sackler Institute for Comparative Genomics |
| SICK | Serial Insane Clown Killer |
| SILF | Shanghai International Library Forum |
| SILO | State Of Iowa Libraries Online |
| SILS | School of Information and Library Science |
| SILS | School of Information and Library Studies |
| SILT | Supporting Indigenous Libraries Today |
| SIP | standard interchange protocol |
| SIP | Statistically Improbable Phrase |