| Secretlab 1903624 · TMA1102227 | Secretlab SG Pte Ltd | 20 Furniture35 Advertising | Registered | 2021 |
| SecurityFriday 1108631 · TMA610363 | AZBIL CORPORATION a Japanese corporation | 9 Electronics35 Advertising41 Education+1 | Registered | 2004 |
| SÉCURITAIRE 0849409 · TMA498734 | Industrielle Alliance, Assurance auto et habitation inc. | 36 Finance | Registered | 1998 |
| SECRETARIAT 0831201 · TMA490157 | BRIDGEWAY SOFTWARE, INC. | 9 Electronics | Registered | 1998 |
| SECURETE 0545141 · TMA315376 | Association d'Hospitalisation Canassurance | 36 Finance | Registered | 1986 |
| SECRETLAB 2133710 · design | Secretlab SG Pte Ltd | 20 Furniture28 Toys35 Advertising | Pending | 2021 |
| SecretsID 2245032 · TMA1265663 | Owner not listed | 3 Cosmetics | Registered | 2024 |
| SECURITY-01 2208788 · TMA1242819 · design | Zhuhai Hengqin Ronghua Industrial Co.,Ltd | 9 Electronics17 Rubber | Registered | 2024 |
| segreto 2192138 · TMA1234801 | an individual | 20 Furniture | Registered | 2024 |
| SHOCARD 2178985 · TMA1186821 · design | Ping Identity Corporation | 9 Electronics42 Science45 Legal | Registered | 2023 |
| SIKARETARDER 2173207 · TMA1203233 | an individual | 1 Chemicals | Registered | 2023 |
| Sigurd 2158703 · TMA1209924 | Olight Group Co.Ltd | 11 Lighting | Registered | 2023 |
| SECURID 2153673 · TMA1221356 · design | RSA Security LLC (a Delaware limited liability company) | 9 Electronics42 Science | Registered | 2024 |
| ShoCard 2147806 · TMA1186756 | Ping Identity Corporation | 9 Electronics42 Science45 Legal | Registered | 2023 |
| SECURITYNOW 2134728 · TMA1194861 | Universal Services of America, LP | 42 Science45 Legal | Registered | 2023 |
| Saceridi 2105926 · TMA1216114 | an individual | 28 Toys | Registered | 2023 |
| SQUEAKHEARTS 2100169 · TMA1194628 | PetSmart Home Office LLC | 28 Toys | Registered | 2023 |
| SUGARTINA 2069240 · TMA1174625 | SPRING MEADOW NURSERY, INC. | 31 Fresh | Registered | 2023 |
| SAGARIT 2051120 · TMA1151812 · design | SAGARIT BATHROOM MANUFACTURER LIMITED | 11 Lighting19 Building20 Furniture | Registered | 2022 |
| Ssecretland 2039698 · TMA1141922 | Molblly Inc | 20 Furniture | Registered | 2022 |
| SOAKWORTHY 2013537 · TMA1260825 | SOAK WASH INC. | 35 Advertising | Registered | 2024 |
| SecurDaBin 1994028 · TMA1254588 | an individual | 20 Furniture | Registered | 2024 |
| SOGRIDECS 1978081 · TMA1209247 | ADENCO ÉLECTRONIQUES INC. | 42 Science | Registered | 2023 |
| SECURITECH 1951881 · TMA1131340 | Owner not shown | 9 Electronics35 Advertising37 Construction+2 | Registered | 2022 |
| SIGRATEX 1946873 · TMA1253323 | an individual | 17 Rubber22 Ropes24 Textiles | Registered | 2024 |