| Abbreviation | Definition |
|---|---|
| SLAT | Sociedad Latinoamericana de Tiroides |
| SLB | Latin American Bryological Society |
| SLB | Linnean Society of Bordeaux |
| SLB | Sociedad Latinoamericana de Briologa |
| SLB | Sociedad Latinoamericana de Briología |
| SLB | Société Linnéenne de Bordeaux |
| SLB | Socit Linnenne de Bordeaux |
| SLBS | Saint Louis BBQ Society |
| SLBS | St Louis BBQ Society |
| SLCC | Society of Local Council Clerks |
| SLEES | Sri Lanka Environment Exploration Society |
| SLER | Society of Labor and Employment Relations |
| SLESM | Free Competitive Society of Seine-Maritime |
| SLESM | Société Libre d'Émulation de la Seine-Maritime |
| SLESM | Socit Libre d'mulation de la Seine-Maritime |
| SLF | Sveriges Läkarförbund |
| SLF | Sveriges Lkarfrbund |
| SLF | Swedish Union of Physicians |
| SLFS | Salt Lake Film Society |
| SLFS | Student Legal Fund Society |