| SIMCITY 0797006 · TMA477193 | ELECTRONIC ARTS INC. (A DELAWARE CORPORATION) | 9 Electronics25 Clothing28 Toys | Registered | 1997 |
| SIMGOT 2306893 · design | Shenzhen SIMGOT Technology Co.Ltd | 9 Electronics | Pending | 2023 |
| Simket 2301661 | Shenzhen Lianyi Shoudai Manufacturing Co. Ltd. | 11 Lighting | Pending | 2023 |
| SUMMACUT 0844839 · TMA546102 | Owner not shown | 16 Paper | Registered | 2001 |
| SWIMCITY 0927995 · design | The City of Ottawa | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2024 |
| SUNICUT 0195854 · UCA27614 | SUN LUBRICANTS AND SPECIALTY PRODUCTS INC. | 4 Oils | Registered | 1947 |
| SUNGAIT 2316110 · TMA1247380 | Owner not listed | 9 Electronics | Registered | 2024 |
| SHANKITGOLF 2276689 · TMA1233043 | SHANKITGOLF | 24 Textiles | Registered | 2024 |
| Symstride 2271884 · TMA1226406 | an individual | 41 Education | Registered | 2024 |
| SINCOTECH 2264566 · TMA1283408 | Sinco Tech Solutions Inc. | 7 Machines | Registered | 2025 |
| SMASCHITTOS 2262272 · TMA1283147 | FOODOLICIEUX RESTAURANT GROUP INC. | 35 Advertising43 Restaurants | Registered | 2025 |
| SHANKSTARS 2258653 · TMA1274822 | Owner not listed | 9 Electronics41 Education | Registered | 2024 |
| Sunsturmca 2244777 · TMA1264321 | an individual | 9 Electronics | Registered | 2024 |
| SENSODRIVE 2240572 · TMA1197303 | SENSODRIVE TECHNOLOGY CORP. | 9 Electronics35 Advertising42 Science | Registered | 2023 |
| SONGCAT 2237178 · TMA1253122 | Owner not listed | 1 Chemicals | Registered | 2024 |
| SONGSTAB 2235745 · TMA1253089 | Owner not listed | 1 Chemicals | Registered | 2024 |
| SONOSTIK 2235726 · TMA1251588 | Owner not listed | 10 Medical | Registered | 2024 |
| SANGUAD 2231286 · TMA1251520 | an individual | 25 Clothing | Registered | 2024 |
| SONGTRUST 2225425 · TMA1243279 | ST MUSIC LLC | 36 Finance | Registered | 2024 |
| SUNNYSTEP 2215016 · TMA1232955 · design | SUNNYSTEP PTE LTD | 25 Clothing | Registered | 2024 |
| Seamost 2201465 · TMA1239769 | Huizhou Saiyun Technology Co., Ltd. | 9 Electronics | Registered | 2024 |
| SANSTHS 2199600 · TMA1269849 | Shenzhen Lixin Trading Co. LTD | 14 Jewellery18 Leather | Registered | 2024 |
| SensOTS 2197755 · TMA1280785 | Siemens Energy Global GmbH & Co. KG | 9 Electronics42 Science | Registered | 2025 |
| SONGDAI 2196838 · TMA1251028 | an individual | 14 Jewellery | Registered | 2024 |
| SUNNYSTRING 2185190 · TMA1215571 | Gogglesoc Apparel Limited | 9 Electronics | Registered | 2023 |