| Abbreviation | Definition |
|---|---|
| SLH | Stavanger Lille Hotel |
| SLI | Southern Lights Incorporated |
| SLJ | Steven L Johnson, Healthcare Education |
| SLK | Shumaker, Loop, and Kendrick, L.L.P. |
| SLK | Shumaker, Loop, and Kendrick, LLP |
| SLLA | Scott Lewis Landscape Architecture |
| SLLA | Student Loan Lender Alliance |
| SLLC | series limited liability company |
| SLM | Silicon Light Machine (Company) |
| SLMP | South Lawn Medical Practice |
| SLMP | St. Louis Medical Professionals |
| SLN | Sliplink Network USA |
| SLN | St. Lawrence Nurseries |
| SLOC | Salt Lake Olympics Committee |
| SLOC | Savoyard Light Opera Company |
| SLOC | Schenectady Light Opera Company |
| SLPC | Sichuan Leaders Petrochemical Company |
| SLR | Shore Line Route [rail] |
| SLR | Sound Lab Records |
| SLRC | Sri Lanka Rupavahini Corporation |