| Abbreviation | Definition |
|---|---|
| SCCL | Santa Clara County Library |
| SCCL | St Clair County Library |
| SCCL | St. Clair County Library |
| SCCL | Standards Certification Customer Library |
| Sci. | Science (serial publication) |
| SCIARY | Scientific Library |
| SCIELO | Scientific Electronic Library Online |
| SciFi | Science Fiction |
| SCILS | South Carolina Information & Library Services |
| SCL | Standard Control Library |
| SCLA | South Carolina Library Association |
| SCLA | Suffolk County Library Association |
| SCLD | Spokane County Library District |
| SCLD | SUNY Council of Library Directors |
| SCLM | Software Configuration and Library Manager |
| SCLS | Somerset County Library System |
| SCLS | South Central Library System |
| SCLS | Suffolk Cooperative Library System |
| SCRBC | Schomburg Center for Research in Black Culture |
| SCRC | Special Collections Research Center |