| SILJANS 0647681 · TMA380145 | an individual | 30 Coffee | Registered | 1991 |
| solcan 1380253 · TMA791741 | an individual | 9 Electronics11 Lighting37 Construction+1 | Registered | 2011 |
| SOLKANE 0647176 · TMA406313 | SOLVAY SA | 1 Chemicals | Registered | 1992 |
| SOLGANAL 0993051 · NFLD3051 | Schering-Plough Canada Inc. | 5 Pharmaceuticals | Registered | 1948 |
| SOLCON 1874303 · TMA1080288 · design | Solbar Ningbo Protein Technology Co. Ltd. | 1 Chemicals | Registered | 2020 |
| SOLSON 1608553 · TMA909359 | an individual | 14 Jewellery | Registered | 2015 |
| SILGAN 0682163 · TMA419739 | SILGAN CORPORATION | 6 Metal21 Housewares | Registered | 1993 |
| SOLUCAN 2210880 | 10312487 Canada Inc. | 6 Metal40 Treatment42 Science | Pending | 2022 |
| SOLUCAN 2210879 · design | 10312487 Canada Inc. | 6 Metal40 Treatment42 Science | Pending | 2022 |
| SoulKind 2119775 · TMA1184221 | an individual | 18 Leather | Registered | 2023 |
| SOLUCENT 1880908 · TMA1063313 | Fusion Products Ltd. | 11 Lighting35 Advertising | Registered | 2019 |
| SILOSENS 1840358 · TMA1070852 | Sensient Colors LLC | 2 Paints | Registered | 2020 |
| SOLICANADA 1826038 · TMA1006274 · design | Solicanada Inc. | 6 Metal11 Lighting21 Housewares | Registered | 2018 |
| SOLOGNAC 1812846 · TMA1079845 | Owner not shown | 6 Metal8 Hand9 Electronics+9 | Registered | 2020 |
| SYLLASENSE 1804992 · TMA992122 | SyllaSense Inc. | 41 Education | Registered | 2018 |
| SALZMANN 1715171 · TMA932429 · design | Salzmann (Ningbo) Reflective Material Co Ltd | 9 Electronics11 Lighting18 Leather+2 | Registered | 2016 |
| SOLCHAYN 1676141 · TMA1054885 | an individual | 5 Pharmaceuticals | Registered | 2019 |
| SOLGENIA 1663674 · TMA969758 | Solgenia USA, Inc. | 9 Electronics | Registered | 2017 |
| SOLOGNAC 1610138 · TMA933548 | Owner not shown | 9 Electronics13 Firearms18 Leather+5 | Registered | 2016 |
| SILSENSE 1274709 · TMA696882 | Lubrizol Advanced Materials, Inc. | 1 Chemicals | Registered | 2007 |
| SOLIGNUM 0990475 · NFLD475 | FOSROC INTERNATIONAL LIMITED | 2 Paints5 Pharmaceuticals29 Meat | Registered | 1913 |
| SOLOXINE 0758980 · TMA443756 | Virbac AH, Inc. (a Delaware corporation) | 5 Pharmaceuticals | Registered | 1995 |
| SOLCENIC 0751066 · TMA476382 | an individual | 1 Chemicals | Registered | 1997 |
| SOLIGNUM 0404708 · TMA244768 | SOLIGNUM INC. | 2 Paints | Registered | 1980 |
| SOLCENIC 2292065 · design | Owner not listed | 1 Chemicals4 Oils | Pending | 2023 |