| Abbreviation | Definition |
|---|---|
| SLA | Special Libraries Association |
| SLAD | Society of London Art Dealers |
| SLEP | Sociedade Latino-Americana de Endocrinologia Pediátrica |
| SLMA | Shoe Lace Manufacturers Association |
| SLMA | Southeastern Lumber Manufacturers Association |
| SLMP | State League of Master Plumbers |
| SMA | Screen Manufacturers Association |
| SMA | Singapore Medical Association |
| SMA | Stucco Manufacturers Association |
| SMACNA | Sheet Metal and Air Conditioning National Association |
| SME | Society for Mining, Metallurgy, and Exploration |
| SME | Society of Manufacturing Engineers |
| SME | Society of Mechanical Engineers |
| SME | State of Mississippi Entrepreneurs |
| SMEM | Social Media Emergency Management |
| SMFPT | Society for Machinery Failure Prevention Technology |
| SMIA | Self-Medication Industry Association |
| SMLA | Spokane Mortgage Lenders Association |
| SMLA | Stichting Maxi Linder Association |
| SMOA | Southeast Michigan Officials Association |