| STROMAG 1930749 · TMA1146198 | Stromag GmbH, a legal entity | 7 Machines9 Electronics12 Vehicles | Registered | 2022 |
| STROMA 1791246 · TMA1023260 | Stroma Medical Corporation | 10 Medical | Registered | 2019 |
| STROMAG 1204781 · TMA652371 · design | Stromag GmbH | 7 Machines9 Electronics12 Vehicles | Registered | 2005 |
| STROMME 2303498 | an individual | 1 Chemicals2 Paints3 Cosmetics+2 | Pending | 2023 |
| STYROMAX 0772198 · TMA456651 | Süd-Chemie Inc. | 1 Chemicals | Registered | 1996 |
| STROMM 2088543 · TMA1196479 · design | Stromm Industries Inc. | 7 Machines | Registered | 2023 |
| STRONE 1934677 · TMA1143117 · design | Shenzhen Jiufangge Investment Consultation Co. Ltd. | 9 Electronics35 Advertising | Registered | 2022 |
| STROMBO 1615148 · TMA950452 | SON HOUSE PRODUCTIONS INC. | 25 Clothing35 Advertising38 Telecommunications+6 | Registered | 2016 |
| STROMER 1548841 · TMA936780 | Owner not shown | 12 Vehicles25 Clothing | Registered | 2016 |
| STRONE 1092362 · TMA588501 | On Side Restoration Services (Ont.) Ltd. | 37 Construction | Registered | 2003 |
| STROMER 2361957 · design | Owner not shown | 9 Electronics12 Vehicles | Pending | 2024 |
| STRÖM 2286570 | an individual | 12 Vehicles | Pending | 2023 |
| STROM !! 2038145 | LGI SOLUTIONS SANTÉ INC. LGI HEALTHCARE SOLUTIONS INC. | 9 Electronics35 Advertising42 Science | Pending | 2020 |
| STROMADERM 1622571 · TMA881581 | Maple Mountain Group, Inc. | 3 Cosmetics | Registered | 2014 |
| STRONGMAN 1923331 · TMA1126107 | Coulter Ventures, LLC | 28 Toys | Registered | 2022 |
| STROMCORE 1809953 · TMA1011758 | Stromcore Energy Inc. | 9 Electronics37 Construction42 Science | Registered | 2018 |
| STRONGMAN 1542075 · TMA883302 | Fusion Nutrition Inc. | 5 Pharmaceuticals | Registered | 2014 |
| STREAMATE 1467336 · TMA805581 | ICF Technology, Inc. | 9 Electronics38 Telecommunications41 Education+1 | Registered | 2011 |
| STROMASYS 1395358 · TMA788487 · design | Stromasys SA | 9 Electronics42 Science | Registered | 2011 |
| STREAMAX 1919754 · TMA1109512 · design | STREAMAX TECHNOLOGY CO. LTD | 9 Electronics35 Advertising42 Science | Registered | 2021 |
| Stronger 1897564 · TMA1105876 | doTERRA Holdings, LLC | 3 Cosmetics | Registered | 2021 |
| STERIMAX 1767163 · TMA1022370 · design | STERIMAX INC. | 5 Pharmaceuticals35 Advertising | Registered | 2019 |
| STRONGER 1729745 · TMA944415 | an individual | 35 Advertising42 Science | Registered | 2016 |
| STREAMAX 1258736 · TMA741458 | The Chemours Company FC, LLC | 35 Advertising37 Construction | Registered | 2009 |
| STREAMAX 1258735 · TMA753784 | The Chemours Company FC, LLC | 1 Chemicals7 Machines9 Electronics | Registered | 2009 |