| STONEBAKE 2091549 · TMA1186127 · design | 2441674 Ontario Inc. | 30 Coffee | Registered | 2023 |
| STONEPARK 1925302 · TMA1107851 | STONEPARK INC. | 19 Building | Registered | 2021 |
| STONEBOAT 1268278 · TMA712382 | Valley Commons Winery Ltd. | 25 Clothing33 Wine35 Advertising+2 | Registered | 2008 |
| STONEBAKED 2091552 · TMA1186128 · design | 2441674 Ontario Inc. | 30 Coffee | Registered | 2023 |
| STONEBERRY 1495839 · TMA843845 | Mason Companies, Inc. | 35 Advertising | Registered | 2013 |
| STONEFLY 2067453 · TMA1156470 | Project Flight School, LLC | 9 Electronics41 Education | Registered | 2022 |
| STONPLUS 1940862 · TMA1141747 | Owner not shown | 1 Chemicals19 Building | Registered | 2022 |
| STONEFLY 1664504 · TMA938974 | an individual | 35 Advertising | Registered | 2016 |
| STONEFIRE 1614807 · TMA927808 | 2441674 Ontario Inc. | 30 Coffee | Registered | 2016 |
| STONEFIRE 1544391 · TMA833318 | 2441674 Ontario Inc. | 30 Coffee | Registered | 2012 |
| STONEFISH 1342554 · TMA752871 | Le Grand Imports/Exports Pty Ltd. | 33 Wine | Registered | 2009 |
| STONEFLY 0603164 · TMA353395 | an individual | 24 Textiles25 Clothing | Registered | 1989 |
| STONEPINE 2233114 | PineStone Asset Management Inc. | 36 Finance41 Education | Pending | 2023 |
| STONEBRIDGE 1867855 · TMA1028835 | an individual | 31 Fresh33 Wine40 Treatment+1 | Registered | 2019 |
| STONEBRIDGE 1601165 · TMA864086 · design | Stonebridge Financial Corporation | 36 Finance | Registered | 2013 |
| Stonebridge 1483369 · TMA792785 | an individual | 12 Vehicles35 Advertising | Registered | 2011 |
| STONEFFECTS 1451199 · TMA813235 | Owner not shown | 2 Paints | Registered | 2011 |
| STONEBRIDGE 1044755 · TMA556584 | Mattamy (Monarch) Limited | 36 Finance41 Education42 Science | Registered | 2002 |
| STONEBRIDGE 2367232 | Stonebridge Financial Corporation | 36 Finance | Pending | 2024 |
| STONEBRIDGE 2208956 | an individual | 45 Legal | Pending | 2022 |
| 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 |