| SEAsmart 1828282 · TMA1025276 | Jamieson Laboratories Ltd. | 5 Pharmaceuticals | Registered | 2019 |
| SEXSMART 1466166 · TMA802437 | Jamieson Laboratories Ltd. | 5 Pharmaceuticals | Registered | 2011 |
| SEESMART 1457369 · TMA780443 | Seesmart Inc. | 11 Lighting | Registered | 2010 |
| SEASMART 1444591 · TMA801737 | Isabelle's Kitchen, Inc. | 29 Meat | Registered | 2011 |
| SegSmart 2371379 | Segway Inc. | 12 Vehicles | Pending | 2024 |
| SOSMAR 2174114 · TMA1261182 | Fuzhou Huixin Youchuang Electronic Commerce Co. Ltd. | 8 Hand | Registered | 2024 |
| SOSMAR 2148252 · TMA1242436 · design | an individual | 16 Paper21 Housewares | Registered | 2024 |
| SECMER 1688714 · TMA927805 | an individual | 7 Machines | Registered | 2016 |
| SECUMAR 0276552 · TMA134233 | BERNHARDT APPARATEBAU GMBH & CO. which is composed of the following members: BERNHARDT & HARMS GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, ULRICH HARMS, AND DRAGERWERK HEINR. & BERNH. DRAGERWERK HEINR. & BERNH. DRAGER | 9 Electronics | Registered | 1964 |
| SEASONARY 1894120 · TMA1099544 | Seasonary GmbH | 35 Advertising38 Telecommunications | Registered | 2021 |
| SYCAMORE 2246618 · TMA1265819 | Owner not listed | 25 Clothing35 Advertising | Registered | 2024 |
| SOKAMR 2181182 · TMA1229500 | AMAVEST INC. | 11 Lighting | Registered | 2024 |
| SIGNER - 1 2160970 · TMA1194005 | ComsignTrust Ltd. | 9 Electronics | Registered | 2023 |
| Secunorm 2110045 · TMA1249455 | an individual | 8 Hand | Registered | 2024 |
| SYGUNAR 2091525 · TMA1171312 | Youmei Biotechnology (Shenzhen) Co. Ltd. | 14 Jewellery | Registered | 2023 |
| SIGUMIR 2080460 · TMA1142966 | GARMONIA, Ltd. | 5 Pharmaceuticals | Registered | 2022 |
| SKYSCANNER 2003585 · TMA1129054 | Skyscanner Limited | 43 Restaurants | Registered | 2022 |
| SAISAMORN 1939423 · TMA1195008 · design | an individual | 3 Cosmetics5 Pharmaceuticals10 Medical+4 | Registered | 2023 |
| SIGNORVINO 1865897 · TMA1086194 | an individual | 32 Beer33 Wine35 Advertising+1 | Registered | 2020 |
| SESSIONWIRE 1846804 · TMA1104676 · design | Sessionwire Communications Inc. | 35 Advertising41 Education42 Science+1 | Registered | 2021 |
| SESSIONWIRE 1843062 · TMA1104637 | Sessionwire Communications Inc. | 35 Advertising41 Education42 Science+1 | Registered | 2021 |
| SIKAMUR 1841789 · TMA1020103 | an individual | 1 Chemicals | Registered | 2019 |
| SYCAMORE 1832797 · TMA1027507 · design | Giant Manufacturing Co. Ltd. | 12 Vehicles | Registered | 2019 |
| SYCOMORE 1752651 · TMA990310 · design | an individual | 16 Paper28 Toys | Registered | 2018 |
| SIGNWAREEXPRESS 1620187 · TMA958585 | an individual | 6 Metal16 Paper19 Building+2 | Registered | 2016 |