| Stumped 2205791 · TMA1241374 | an individual | 16 Paper25 Clothing35 Advertising | Registered | 2024 |
| STOMP 2170991 · TMA1222295 | H&H Sports Protection USA Inc. | 9 Electronics25 Clothing | Registered | 2024 |
| STAMPD 1853058 · TMA1097975 | Cornerman Productions LLC | 4 Oils11 Lighting16 Paper+3 | Registered | 2021 |
| STOMP 2338462 | an individual | 28 Toys | Pending | 2024 |
| STAMPS 2106018 | an individual | 35 Advertising | Pending | 2021 |
| STUMBLE!! 1575006 · TMA880111 | Mix Media Group LLC | 9 Electronics35 Advertising38 Telecommunications+3 | Registered | 2014 |
| STOMPLE 1479200 · TMA813805 | Spin Master Ltd. | 28 Toys | Registered | 2011 |
| STUMABO 1087965 · TMA582484 | STUMABO INTERNATIONAL A joint stock company | 7 Machines8 Hand16 Paper | Registered | 2003 |
| STOMPER 0473550 · TMA280863 | KADER INDUSTRIAL COMPANY LIMITED | 28 Toys | Registered | 1983 |
| STAMPED 2223448 | LES TECHNOLOGIES STAMPED INC. | 9 Electronics35 Advertising42 Science | Pending | 2022 |
| STOMPER 2181555 | Nine O Nine Brands Inc. | 34 Tobacco | Pending | 2022 |
| STAMPED 2138747 | Stamped Operations Ltd. | 9 Electronics35 Advertising42 Science | Pending | 2021 |
| STUMPTOWN 1538825 · TMA883466 | LaCrosse Footwear, Inc. | 25 Clothing | Registered | 2014 |
| STUMPTOWN 1505332 · TMA810768 | Stumptown Coffee Corp. | 30 Coffee | Registered | 2011 |
| Stanhope 2183618 · TMA1257812 | 1879 Brand Ventures Ltd | 33 Wine | Registered | 2024 |
| Stanpetix 2160816 · TMA1218516 | Jinhua Shunwei Network Tech Co. Ltd | 25 Clothing | Registered | 2024 |
| stunfassoo 2150672 · TMA1207537 | an individual | 14 Jewellery | Registered | 2023 |
| STEMVIVO 2111608 · TMA1227799 | STEMVIVO, INC. | 1 Chemicals5 Pharmaceuticals42 Science | Registered | 2024 |
| STONEBAKED 2091552 · TMA1186128 · design | 2441674 Ontario Inc. | 30 Coffee | Registered | 2023 |
| STONEBAKE 2091549 · TMA1186127 · design | 2441674 Ontario Inc. | 30 Coffee | Registered | 2023 |
| STONEFLY 2067453 · TMA1156470 | Project Flight School, LLC | 9 Electronics41 Education | Registered | 2022 |
| STAMPSDAQ 2033559 · TMA1158097 · design | an individual | 38 Telecommunications42 Science | Registered | 2022 |
| SteamWave 1991550 · TMA1192394 | Guangdong Galanz Enterprises Co. Ltd. | 11 Lighting | Registered | 2023 |
| STANBOW 1987325 · TMA1135539 | Shenzhen TianQin Technology Co.Ltd | 11 Lighting | Registered | 2022 |
| STONFO 1968813 · TMA1267665 | Owner not shown | 6 Metal8 Hand11 Lighting+5 | Registered | 2024 |