| STEMTECH 1537349 · TMA836731 · design | StemTech HealthSciences, Inc. | 3 Cosmetics5 Pharmaceuticals35 Advertising+1 | Registered | 2012 |
| STEMTECH 1275737 · TMA787083 | StemTech HealthSciences, Inc. | 5 Pharmaceuticals | Registered | 2011 |
| STEAMTECH 1688008 · TMA975117 | Conair LLC | 8 Hand | Registered | 2017 |
| STONETECH 1358286 · TMA763685 | Laticrete International, Inc. a Connecticut corporation | 2 Paints3 Cosmetics | Registered | 2010 |
| STANTEC 0895721 · TMA537134 | Stantec Consulting Ltd. | 35 Advertising37 Construction41 Education+1 | Registered | 2000 |
| STANNATECH 1346398 · TMA727851 | Atotech Deutschland GmbH | 1 Chemicals | Registered | 2008 |
| STEAMTEC 2261817 · TMA1281300 · design | Shenzhen TOLO Leisure Equipment Co. Limited | 11 Lighting | Registered | 2025 |
| STENDERS 2000918 · TMA1116907 | an individual | 3 Cosmetics16 Paper35 Advertising | Registered | 2022 |
| STONDECK 1940849 · TMA1165198 | Owner not shown | 2 Paints19 Building | Registered | 2023 |
| STIMTEC 1486831 · TMA814048 | 3176282 Canada Ltd. | 10 Medical | Registered | 2011 |
| STENTOR 1289200 · TMA700611 | Stentor Music Co. Ltd. | 15 Musical | Registered | 2007 |
| STENTOR 0696759 · TMA426434 | STENTOR RESOURCE CENTRE INC. | 38 Telecommunications | Registered | 1994 |
| STANTEX 0426959 · TMA243530 | Fashion Chemicals GmbH & Co. KG | 1 Chemicals12 Vehicles20 Furniture | Registered | 1980 |
| STONETOUCH 1245312 · TMA662903 | OldCastle Building Products Canada, Inc. | 19 Building | Registered | 2006 |
| STANDECZA 2171581 · TMA1200586 | Owner not shown | 5 Pharmaceuticals38 Telecommunications42 Science+1 | Registered | 2023 |
| STONTRACE 1940876 · TMA1156659 | Owner not shown | 2 Paints19 Building | Registered | 2022 |
| STEINHEAT 1807132 · TMA1005671 | Stein Industries Inc. | 11 Lighting | Registered | 2018 |
| SATINDECO 1509794 · TMA830881 | Guardian Glass, LLC | 19 Building20 Furniture | Registered | 2012 |
| STENTOFON 0438274 · TMA266205 | an individual | 9 Electronics | Registered | 1982 |
| STENTRIEVER 1469822 · TMA832471 | STRYKER CORPORATION | 10 Medical | Registered | 2012 |
| StoneDam 2161295 · TMA1211167 | Dongguan Heyi Trading Co. Ltd. | 28 Toys | Registered | 2023 |
| STENDMAR 2125154 · TMA1170313 · design | BESCO USA, INC. | 20 Furniture | Registered | 2023 |
| SoTomaté!! 2119066 · TMA1201392 | Tomaté!! Inc. | 29 Meat30 Coffee31 Fresh+2 | Registered | 2023 |
| STEINDER 2111895 · TMA1192720 | Favonex Korea Ltd. | 8 Hand | Registered | 2023 |
| STANDOFF 2108237 · TMA1225853 | AXLEBOLT | 9 Electronics41 Education | Registered | 2024 |