| SOTA 2170902 · TMA1220687 | The Functional Beverage Group Inc. | 30 Coffee | Registered | 2024 |
| SCTE 1880692 · TMA1144121 | Society of Cable Telecommunications Engineers, Inc. | 35 Advertising38 Telecommunications41 Education+1 | Registered | 2022 |
| SOTA 1793069 · TMA1019594 · design | SOTA Instruments Inc. | 9 Electronics10 Medical11 Lighting+5 | Registered | 2019 |
| SOTA 1755496 · TMA954363 | 8791481 Canada Inc. | 16 Paper20 Furniture21 Housewares+2 | Registered | 2016 |
| SOTO 1717881 · TMA1041281 · design | Soto Sake Corporation | 21 Housewares32 Beer33 Wine+1 | Registered | 2019 |
| SOT 1583368 · TMA878436 | Sacro Occipital Research Society International, Inc. Non-profit corporation of Kansas | 44 Medical | Registered | 2014 |
| SOTI 1461730 · TMA788809 | SOTI Inc. | 9 Electronics | Registered | 2011 |
| SOTA 1421707 · TMA761405 | SOTAWALL LIMITED | 19 Building40 Treatment42 Science | Registered | 2010 |
| STE 1067139 · TMA581920 | ABB Asea Brown Boveri Ltd. | 9 Electronics | Registered | 2003 |
| SITE 0738105 · TMA445806 · design | Schlumberger Canada Limited | 35 Advertising37 Construction39 Transport+1 | Registered | 1995 |
| SITE 0738103 · TMA445805 · design | Schlumberger Canada Limited | 35 Advertising37 Construction39 Transport+1 | Registered | 1995 |
| SOT 2118341 | RPMGlobal Holdings Limited | 9 Electronics | Pending | 2021 |
| SOOTHE 1864558 · TMA1021168 | Soothe, Inc. | 9 Electronics42 Science | Registered | 2019 |
| SOOTHE 1706987 · TMA987259 | BAUSCH & LOMB INCORPORATED | 3 Cosmetics5 Pharmaceuticals | Registered | 2017 |
| SOOTHE 1392667 · TMA796091 | Tata Global Beverages Canada Inc. | 30 Coffee | Registered | 2011 |
| SOOTHE 2261373 | Owner not listed | 9 Electronics42 Science | Pending | 2023 |
| SOOTHE 1961436 | Rodan & Fields, LLC (a Delaware Limited Liability Company) | 3 Cosmetics5 Pharmaceuticals | Pending | 2019 |
| SIETE 2202995 · TMA1246425 | Garza Food Ventures, LLC | 9 Electronics18 Leather21 Housewares+6 | Registered | 2024 |
| SHOTO 2078983 · TMA1141440 | JohnsTech International Corporation | 9 Electronics | Registered | 2022 |
| SHOTO 2074576 · TMA1249433 · design | Shoto & Akedo IP LLC | 43 Restaurants | Registered | 2024 |
| SHOTT 2049705 · TMA1225785 · design | Shott Beverages Limited | 29 Meat30 Coffee32 Beer | Registered | 2024 |
| SHOTT 2048869 · TMA1225784 · design | Shott Beverages Limited | 29 Meat30 Coffee32 Beer | Registered | 2024 |
| SiteW 2011802 · TMA1156004 | SiteW.com | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2022 |
| SOUTH 1983974 · TMA1247700 | My South Inc. | 44 Medical | Registered | 2024 |
| SIOTI 1980886 · TMA1124252 · design | Shenzhen Xiruisi Technology Co.Ltd. | 9 Electronics | Registered | 2022 |