| Abbreviation | Definition |
|---|---|
| SLGHS | St Louis Ghost Hunters Society |
| SLGM | Society of Local Government Managers |
| SLIA | Sri Lanka Institute of Architects |
| SLL | Finlands Läkarförbund |
| SLL | Finlands Lkarfrbund |
| SLL | Finnish Medical Association |
| SLL | Linnean Society of Lyon |
| SLL | Société Linnéenne de Lyon |
| SLL | Society for Lifelong Learning |
| SLL | Socit Linnenne de Lyon |
| SLL | Suomen Lääkäriliito |
| SLL | Suomen Lkriliito |
| SLLR | Society for Law Life and Religion |
| SLNP | Linnean Society Nord-Picardie |
| SLNP | Société Linnéenne Nord-Picardie |
| SLNP | Socit Linnenne Nord-Picardie |
| SLP | Linguistic Society of Paris |
| SLP | Luxembourg Psychological Society |
| SLP | Société de Linguistique de Paris |
| SLP | Société Luxembourgeoise de Psychologie |