| Abbreviation | Definition |
|---|---|
| SLWA | Santa Rosa de Abuna, Bolivia |
| SLWD | Seis de Agosto, Bolivia |
| SLX | Salt Cay, Turks & Caicos Islands |
| SLY | Salehard, Russia |
| SLYA | Yacuiba, Bolivia |
| SLYB | El Bato, Bolivia |
| SLYP | Muyupampa, Bolivia |
| SLYY | San Yo Yo, Bolivia |
| SLZ | Sao Luiz, MA, Brazil |
| SLZB | San Pedro, Bolivia |
| SLZF | San Francisco-Naciff, Bolivia |
| SLZG | San Agustin, Bolivia |
| SLZJ | San Pedro-Richard, Bolivia |
| SLZK | San Lucas, Bolivia |
| SLZR | San Rafael-Isidoro, Bolivia |
| SLZX | San Pedro-Salvatierra, Bolivia |
| SMA | Santa Maria, Azores, Portugal |
| SMB | Cerro El Sombrero, Chile |
| SMCI | Coeroeni, Suriname |
| SMCO | Coronie, Suriname |