| Abbreviation | Definition |
|---|---|
| SLD | Structured Logic Design |
| SLED | Self Launching Erection Device |
| SLED | Single Large Expensive Disk |
| SLF | Stiff Little Fingers |
| SLG | Saskatoon Linux Group |
| SLG | Symbiotic Label Group |
| SLO | Service Level Objective |
| SLP | Selection Library Processing |
| SLR | Service Level Reporter |
| SLS | Site Log Submission |
| SLU | Secondary Logical Unit |
| SLUG | Sintok Linux User Group |
| SLUG | Skane Linux User Group |
| SLUG | Slug Linux Unix Group |
| SLUG | Susitna Linux User's Group |
| SM | Scheduler Message |
| SM | Set Mode |
| SM | Shared Memory |
| SM | Small Machine |
| SM | Software Modem |