| SLINGER 1873351 · TMA1045814 · design | Slinger Bag Inc. | 28 Toys | Registered | 2019 |
| SLINGSHADE 1790822 · TMA984424 | Polaris Industries Inc. | 12 Vehicles | Registered | 2017 |
| SLINGER 1772258 · TMA992022 | KUHN NORTH AMERICA, INC. | 7 Machines | Registered | 2018 |
| SlingSerter 1475227 · TMA845640 | University Health Network | 7 Machines10 Medical | Registered | 2013 |
| SLINGLOADED 1443935 · TMA841482 | an individual | 9 Electronics | Registered | 2013 |
| SLINGMASTER 0476507 · TMA291319 · design | Hercules SLR Inc. | 6 Metal7 Machines8 Hand+5 | Registered | 1984 |
| SLIMCLEANER 1800346 · TMA1016872 | SlimWare Utilities Holdings, Inc. | 9 Electronics | Registered | 2019 |
| SLINGMAX 0776505 · TMA462568 | SLINGMAX, INC. A CORPORATION OF PENNSYLVANIA | 6 Metal9 Electronics22 Ropes | Registered | 1996 |
| SLIMSHAPER 2189883 · design | Owner not shown | 10 Medical | Pending | 2022 |
| SELENASE 2265243 · TMA1283455 · design | biosyn Arzneimittel GmbH | 5 Pharmaceuticals | Registered | 2025 |
| SALMOKA 2249130 · TMA1279136 | Shenzhen Andahe Technology Co.Ltd | 11 Lighting | Registered | 2024 |
| SLINGSHOT 2243764 · TMA1261821 | Motif Labs Ltd. | 3 Cosmetics5 Pharmaceuticals29 Meat+1 | Registered | 2024 |
| SOLMAXX 2236461 · TMA1256910 | Alberta Veterinary Laboratories Ltd. | 5 Pharmaceuticals | Registered | 2024 |
| SOLENICA 2214739 · TMA1243230 | Solenica, Inc. | 11 Lighting | Registered | 2024 |
| SheLins 2214267 · TMA1244370 | Shenzhen Xinxing Hengyue Electronics Commerce Co., Ltd. | 10 Medical | Registered | 2024 |
| shlinux 2210664 · TMA1242955 | an individual | 11 Lighting | Registered | 2024 |
| SOLNIXON 2193268 · TMA1242554 | Alberta Veterinary Laboratories Ltd. | 5 Pharmaceuticals | Registered | 2024 |
| SILANG 2186844 · TMA1261249 · design | SILANG FOOD (HUAI BEI) CO. LTD | 30 Coffee | Registered | 2024 |
| SLOWING 2164698 · TMA1175279 | 12523744 Canada Inc. | 28 Toys35 Advertising | Registered | 2023 |
| SHILANGO 2163248 · TMA1214450 | an individual | 18 Leather24 Textiles35 Advertising | Registered | 2023 |
| Slanku 2160523 · TMA1211116 | an individual | 9 Electronics | Registered | 2023 |
| Skelang 2157740 · TMA1208875 | Shenzhen Juli Trading Co. Ltd | 6 Metal | Registered | 2023 |
| Suilong 2136591 · TMA1208586 · design | Foshan Suilong Furniture Co. Ltd. | 20 Furniture | Registered | 2023 |
| SKAYLINK 2129353 · TMA1273972 | Skaylink GmbH | 9 Electronics16 Paper35 Advertising+4 | Registered | 2024 |
| SOLENSIA 2123845 · TMA1169060 · design | Zoetis Services LLC | 5 Pharmaceuticals | Registered | 2023 |