| StemProjector 2220634 | Kano Computing Limited | 9 Electronics38 Telecommunications | Pending | 2022 |
| STAINPROTECT 2103155 | BISSELL Inc. | 3 Cosmetics | Pending | 2021 |
| STEMPREP 2278089 | STEMCELL Technologies Canada Inc. | 1 Chemicals9 Electronics | Pending | 2023 |
| STEMBOLT 1814686 · TMA992845 | Stembolt Technologies Inc. | 42 Science | Registered | 2018 |
| SITEIMPROVE 1752138 · TMA999068 | Owner not shown | 9 Electronics42 Science | Registered | 2018 |
| STEMPOLIO 1406070 · TMA802661 | Amorepacific Corporation | 1 Chemicals5 Pharmaceuticals29 Meat+1 | Registered | 2011 |
| STAMPCRETE 0681524 · TMA443188 | Global Trade Enterprises, Ltd. (a New York corporation) | 1 Chemicals2 Paints7 Machines+4 | Registered | 1995 |
| STENPRO 0208365 · UCA36920 | Irving Shipbuilding Inc. | 6 Metal7 Machines11 Lighting+2 | Registered | 1950 |
| STEMBIONT 2290569 | Owner not listed | 1 Chemicals5 Pharmaceuticals | Pending | 2023 |
| Stumped 2205791 · TMA1241374 | an individual | 16 Paper25 Clothing35 Advertising | Registered | 2024 |
| Stanhope 2183618 · TMA1257812 | 1879 Brand Ventures Ltd | 33 Wine | Registered | 2024 |
| STOMP 2170991 · TMA1222295 | H&H Sports Protection USA Inc. | 9 Electronics25 Clothing | 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 |
| STUMPY 2101038 · TMA1240892 | an individual | 20 Furniture35 Advertising | 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 |
| STONYFIELD 1964013 · TMA1148388 | Lactalis US Yogurt, Inc. dba Stonyfield Farm, Inc. | 29 Meat | Registered | 2022 |
| STONEFIELD 1963760 · TMA1264726 | an individual | 9 Electronics18 Leather25 Clothing | Registered | 2024 |