| STARTILE 1485948 · TMA868480 | New Star Lighting, Inc. | 11 Lighting | Registered | 2014 |
| STURTZ 2261648 | Stürtz Maschinenbau GmbH | 7 Machines9 Electronics35 Advertising | Pending | 2023 |
| Startly 2192357 | Startly Inc. | 35 Advertising36 Finance | Pending | 2022 |
| STRATOTEGIC 2294876 · TMA1260351 · design | Stratotegic Inc. | 9 Electronics39 Transport42 Science | Registered | 2024 |
| STRATOTEGIC 2294875 · TMA1260350 | Stratotegic Inc. | 9 Electronics39 Transport42 Science | Registered | 2024 |
| STRATHVEGAS 2263262 · TMA1283232 · design | an individual | 42 Science | Registered | 2025 |
| Striatum 2252555 · TMA1271452 | an individual | 9 Electronics25 Clothing41 Education | Registered | 2024 |
| StarterSkid 2248106 · TMA1277593 | manufacture adria inc | 9 Electronics | Registered | 2024 |
| STARDUST 2246165 · TMA1263256 | Owner not listed | 3 Cosmetics | Registered | 2024 |
| STRETCHIT 2245911 · TMA1264477 · design | Stretchit, Inc. | 9 Electronics41 Education | Registered | 2024 |
| STRETCHFLEX 2234136 · TMA1256707 | L'OREAL | 1 Chemicals3 Cosmetics | Registered | 2024 |
| STRATUS 2227653 · TMA1252709 | STRAT-B Royalties Limited Partnership | 37 Construction | Registered | 2024 |
| STROTON 2227417 · TMA1252680 · design | an individual | 7 Machines | Registered | 2024 |
| STORYTELLER 2224976 · TMA1250163 | Winery Exchange, Inc. | 33 Wine | Registered | 2024 |
| STORYATHON 2205168 · TMA1238946 | 3P LEARNING LIMITED | 41 Education42 Science | Registered | 2024 |
| STARTMORTGAGE. 2202589 · TMA1241258 · design | startMYplan.ca Limited | 36 Finance41 Education | Registered | 2024 |
| STRIDE 2201790 · TMA1269854 | Chiaro Technology Ltd | 10 Medical | Registered | 2024 |
| STARTRC 2197331 · TMA1238346 · design | Shenzhen Starfield Technology Co., Ltd. | 28 Toys | Registered | 2024 |
| STARTMORTGAGE. 2196958 · TMA1241231 · design | startMYplan.ca Limited | 36 Finance41 Education | Registered | 2024 |
| STRATAAIR 2193802 · TMA1219986 | CEA INDUSTRIES INC. | 11 Lighting | Registered | 2024 |
| STARTCUP 2188582 · TMA1234596 | Owner not shown | 35 Advertising41 Education | Registered | 2024 |
| STRATUS 2187738 · TMA1232611 | Canadian Tire Corporation, Limited | 6 Metal11 Lighting12 Vehicles | Registered | 2024 |
| STRATUS 2187737 · TMA1232610 · design | Canadian Tire Corporation, Limited | 6 Metal11 Lighting12 Vehicles | Registered | 2024 |
| STRATUMXPRO 2170916 · TMA1223089 | Richardson International Limited | 1 Chemicals | Registered | 2024 |
| STRATUMX 2170911 · TMA1223084 | Richardson International Limited | 1 Chemicals | Registered | 2024 |