| Samdock 2147863 | Samdock GmbH | 9 Electronics35 Advertising42 Science | Pending | 2021 |
| SAMDEX 1727636 · TMA995348 | Owner not shown | 9 Electronics | Registered | 2018 |
| SAMTEC 1535285 · TMA840745 · design | Samtec, Inc. | 9 Electronics | Registered | 2013 |
| SAMTEC 1447813 · TMA804972 | Samtec, Inc. | 9 Electronics | Registered | 2011 |
| SANDOZ 0271458 · TMA135750 | an individual | 1 Chemicals5 Pharmaceuticals10 Medical | Registered | 1964 |
| SANDOZ 0214482 · UCA42071 | Owner not shown | 14 Jewellery | Registered | 1952 |
| SAMDASOO 1526993 · TMA851329 · design | Jeju Special Self-Governing Province Development Corporation | 30 Coffee32 Beer35 Advertising | Registered | 2013 |
| SANDWOX 2214324 · TMA1244376 · design | CHANGZHOU GUANGMENG TOOLS & HARDWARE CO., LTD | 3 Cosmetics | Registered | 2024 |
| SANDECK 1910041 · TMA1129439 | POSITEC GROUP LIMITED, a legal entity | 3 Cosmetics7 Machines | Registered | 2022 |
| SANDTEC 1753900 · TMA968426 | an individual | 1 Chemicals | Registered | 2017 |
| SKANDIC 0338119 · TMA176655 | Bombardier Recreational Products Inc. | 12 Vehicles | Registered | 1971 |
| SANDWOX 2365121 · design | Sandwox (Changzhou) New Material Technology Co. Ltd. | 7 Machines | Pending | 2024 |
| SEAMTEC 2269746 | J. Ennis Fabrics Ltd | 6 Metal20 Furniture23 Yarns+2 | Pending | 2023 |
| SAMDESK 2069064 | SOCIAL ASSET MANAGEMENT INC. | 42 Science | Pending | 2020 |
| SOUNDX 2284034 · TMA1224690 | Spartech LLC | 17 Rubber | Registered | 2024 |
| sindax 2263093 · TMA1281456 | Sindax Electronics Co. Ltd. | 21 Housewares | Registered | 2025 |
| SYNTHOSOL 2257318 · TMA1273184 | Synthomer (UK) Limited | 17 Rubber | Registered | 2024 |
| sinotouch 2250771 · TMA1268887 | Owner not listed | 6 Metal7 Machines | Registered | 2024 |
| SCINTIX 2250312 · TMA1267442 | Reflexion Medical, Inc. | 9 Electronics10 Medical44 Medical | Registered | 2024 |
| sinotouch 2246771 · TMA1265849 | Owner not listed | 10 Medical | Registered | 2024 |
| SANTCO 2241645 · TMA1241947 | Owner not listed | 37 Construction42 Science | Registered | 2024 |
| sandycoat 2232301 · TMA1254031 | Owner not shown | 1 Chemicals2 Paints19 Building | Registered | 2024 |
| SOUNDSCAPE 2226252 · TMA1209079 | TEMPUR WORLD, LLC | 20 Furniture | Registered | 2023 |
| SoundWise 2223546 · TMA1248847 | an individual | 35 Advertising | Registered | 2024 |
| SANDJEST 2223157 · TMA1249891 | an individual | 21 Housewares | Registered | 2024 |