| STRASSA 1793985 · TMA990162 | KIMBALL INTERNATIONAL, INC. | 20 Furniture | Registered | 2018 |
| STRAWSIP 2373257 | Cirkul, Inc. | 21 Housewares | Pending | 2024 |
| Starsea 2230391 · TMA1253014 | Shenzhen Hangmeng Technology Co. Ltd. | 11 Lighting | Registered | 2024 |
| STRASSER 2069897 · TMA1187159 · design | HMS Präzisionstechnik GmbH | 9 Electronics13 Firearms25 Clothing | Registered | 2023 |
| STRAGA 1743884 · TMA955792 · design | 8888108 Canada Ltd. | 3 Cosmetics4 Oils21 Housewares+2 | Registered | 2016 |
| STREST 1353430 · TMA742118 | St. Francis Herb Farm Incorporated | 5 Pharmaceuticals44 Medical | Registered | 2009 |
| STRAUSS 1350629 · TMA764538 | Leviton Manufacturing Co. Inc. a corporation organized and existing under the laws of the State of Delaware | 9 Electronics | Registered | 2010 |
| STRAUSS 1347838 · TMA783868 · design | STRAUSS GROUP LTD. | 29 Meat30 Coffee31 Fresh | Registered | 2010 |
| STRASS 0528575 · TMA358471 · design | an individual | 11 Lighting | Registered | 1989 |
| STRASS 0396081 · TMA226063 | an individual | 11 Lighting | Registered | 1978 |
| STRESSTABS 0335912 · TMA180857 | PF Consumer Healthcare Canada ULC | 5 Pharmaceuticals | Registered | 1972 |
| StressPal 1795953 · TMA1044135 | StressPal Inc. | 41 Education | Registered | 2019 |
| STERISTAY 1578016 · TMA884389 · design | an individual | 10 Medical | Registered | 2014 |
| starrysea 2341923 | Owner not listed | 35 Advertising | Pending | 2024 |
| starrysea 2309016 | Shenzhen Ampere Time Digital Energy Technology Co. Ltd. | 9 Electronics | Pending | 2024 |
| STORAGESWAP 1448585 · TMA779363 | U-HAUL INTERNATIONAL, INC. | 41 Education | Registered | 2010 |
| Staraise 2253420 · TMA1271552 | an individual | 28 Toys | Registered | 2024 |
| STROCS 2252280 · TMA1270230 | an individual | 25 Clothing | Registered | 2024 |
| Sterasure 2248342 · TMA1240520 | Owner not listed | 3 Cosmetics5 Pharmaceuticals | Registered | 2024 |
| STARSTRUCK 2242135 · TMA1262947 | Owner not listed | 33 Wine | Registered | 2024 |
| starck2charge 2229662 · TMA1240489 | H.C. Starck Infrastructure GmbH & Co. KG | 1 Chemicals6 Metal | Registered | 2024 |
| Starcity 2224402 · TMA1250045 | Starcity Renovators Ltd | 37 Construction | Registered | 2024 |
| starck2print 2221407 · TMA1240390 | H.C. Starck Infrastructure GmbH & Co. KG | 6 Metal | Registered | 2024 |
| sctarX 2220471 · TMA1248478 | an individual | 20 Furniture | Registered | 2024 |
| STARKISSER 2191692 · TMA1196157 | L'OREAL | 3 Cosmetics | Registered | 2023 |