| Abbreviation | Definition |
|---|---|
| SLAYA | Sri Lankan Australian Youth Association |
| SLDN | ServiceMembers Legal Defense Network |
| SLEA | Sarnia Lambton Environmental Association [Ontario, Canada] |
| SLEA | Sri Lanka Economic Association |
| SLGS | Southwest Louisiana Genealogical Society |
| SLMH | South Lane Mental Health |
| SLOTGACORGAMPANGMENANG | Jelajahi dunia Slot Gacor Gampang Menang Di tahun 2024 Towertoto sudah terpercaya situs online terke |
| SLS | Surf Lifesaving |
| SLSV | Surf Life Saving Victoria |
| SMAC | Student Movement Against Cancer |
| SMC | Save the Manatee Club |
| SMCA | Syro Malabar Cultural Association |
| SMDG | Slovak Millenium Development Goals |
| SMFD | Soybean Management Field Days |
| SMH | Sound Mental Health |
| SMH | St. Michael's House |
| SMHDC | St. Mary's Home for Disabled Children |
| SMI | Salesian Missions, Inc. |
| SMJ | Strategic Management Society |
| SMM | Society of Marine Mammalogy |