| SEGRIDE 2332031 · design | Segway Inc. | 9 Electronics12 Vehicles | Pending | 2024 |
| SECURITEX 0606950 · TMA358599 | SPERIAN PROTECTIVE APPAREL LTD. / SPERIAN VÊTEMENTS DE PROTECTION LTÉE | 9 Electronics35 Advertising40 Treatment | Registered | 1989 |
| SecuriTek 2316432 | Servitek FOUSSIER Inc. | 6 Metal20 Furniture | Pending | 2024 |
| SECURITY 1851284 · TMA1021720 | HOUGHTON CHEMICAL CORPORATION | 1 Chemicals3 Cosmetics | Registered | 2019 |
| SECURITY+ 1422366 · TMA812001 | THE COMPUTING TECHNOLOGY INDUSTRY ASSOCIATION, INC. | 35 Advertising42 Science | Registered | 2011 |
| SECURITY 1195054 · TMA625398 | Kimberly-Clark Worldwide, Inc. | 5 Pharmaceuticals | Registered | 2004 |
| SECURITY 0548804 · TMA346858 | BAYER CROPSCIENCE INC. | 1 Chemicals5 Pharmaceuticals | Registered | 1988 |
| SECURETE 0545141 · TMA315376 | Association d'Hospitalisation Canassurance | 36 Finance | Registered | 1986 |
| SUZORITE 0380265 · TMA215611 | IMERYS CANADA INC. | 17 Rubber | Registered | 1976 |
| "SUZORITE" 0212313 · UCA40450 | IMERYS CANADA INC. | 17 Rubber26 Sewing | Registered | 1951 |
| segurito 2295312 | Hunan Jingjie Technology Co. Ltd. | 9 Electronics | Pending | 2023 |
| segurito 2295311 | Hunan Jingjie Technology Co. Ltd. | 25 Clothing | Pending | 2023 |
| SECURITECH 1951881 · TMA1131340 | Owner not shown | 9 Electronics35 Advertising37 Construction+2 | Registered | 2022 |
| SECURITREE 1098926 · TMA571996 | AMENAZA TECHNOLOGIES LIMITED | 9 Electronics16 Paper41 Education+1 | Registered | 2002 |
| SECURITREE 1098925 · TMA571995 · design | AMENAZA TECHNOLOGIES LIMITED | 9 Electronics16 Paper41 Education+1 | Registered | 2002 |
| SECURITIME 2286563 | Single Source Security, LLC | 42 Science | Pending | 2023 |
| segreto 2192138 · TMA1234801 | an individual | 20 Furniture | Registered | 2024 |
| Secret 1855893 · TMA1048809 | MARKER DALBELLO VÖLKL (INTERNATIONAL) GmbH | 28 Toys | Registered | 2019 |
| SECRID 1798310 · TMA1087981 | Owner not shown | 9 Electronics14 Jewellery16 Paper+3 | Registered | 2020 |
| SECRET 1625224 · TMA894459 · design | The Procter & Gamble Company | 3 Cosmetics | Registered | 2015 |
| SECRID 1569534 · TMA866271 | an individual | 18 Leather | Registered | 2013 |
| SECRETS 1504865 · TMA839169 | Cadbury UK Limited | 30 Coffee35 Advertising | Registered | 2013 |
| SECRETO 1450779 · TMA784264 | Owner not shown | 33 Wine | Registered | 2010 |
| SAKRETE 1327546 · TMA785264 | SAKRETE OF NORTH AMERICA, LLC | 1 Chemicals2 Paints3 Cosmetics+10 | Registered | 2010 |
| SECRET 1236365 · TMA650949 | TAFISA CANADA INC. | 19 Building | Registered | 2005 |