| Name | Unified registration number |
|---|---|
| Siemens Osakeyhtio Latvijas filiāle | 40103246186 |
| SIGNEDA LATVIA SIA | 40203020020 |
| SIG SOLAR LATVIA SIA | 50203468111 |
| SIRONA Dental Systems GmbH | DEHRB 24948 |
| SKANDINAVISKA ENSKILDA BANKEN AB Rīgas filiāle | 40003816496 |
| Slēgtas akciju sabiedrības "NOTA BENE" filiāle "NOTA BENE-LATVIJA" | 40003344847 |
| "SL.NET" SIA | 50003664091 |
| Smartecon SIA | 40203393648 |
| SmartPosti SIA | 40003567822 |
| Solar Channel SIA | 40203393347 |
| SOLAR SIA | 40203418903 |
| Solar Surfers SIA | 40203393332 |
| Somfy SIA | 40003592891 |
| Sonos Europe B.V. | NL32107881 |
| Sonova Consumer Hearing GmbH | DEHRB221905 |
| Sony Europe B.V. filiāle Latvia | 50103291641 |
| "Spector light" SIA | 40103952456 |
| SPECTRO Analytical Instruments GmbH | DEHRB1876 |
| SPV Kurzeme SIA | 50203401951 |
| Stanford Music Latvia SIA | 40103974186 |