| SECURITYNOW 2134728 · TMA1194861 | Universal Services of America, LP | 42 Science45 Legal | Registered | 2023 |
| SECURITYHOST 1099249 · TMA572959 | SECURIGUARD SERVICES LIMITED | 42 Science | Registered | 2003 |
| SecurityConnect 1985028 | Paladin Technologies Inc. | 35 Advertising41 Education42 Science+1 | Pending | 2019 |
| SECURITY-01 2208788 · TMA1242819 · design | Zhuhai Hengqin Ronghua Industrial Co.,Ltd | 9 Electronics17 Rubber | Registered | 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 |
| 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 |
| SECURITEX 0606950 · TMA358599 | SPERIAN PROTECTIVE APPAREL LTD. / SPERIAN VÊTEMENTS DE PROTECTION LTÉE | 9 Electronics35 Advertising40 Treatment | Registered | 1989 |
| SECURITY 0548804 · TMA346858 | BAYER CROPSCIENCE INC. | 1 Chemicals5 Pharmaceuticals | Registered | 1988 |
| SecuriTek 2316432 | Servitek FOUSSIER Inc. | 6 Metal20 Furniture | Pending | 2024 |
| SECURITIME 2286563 | Single Source Security, LLC | 42 Science | Pending | 2023 |
| SECURITYARD 2057565 | 1214778 B.C.LTD | 9 Electronics | Pending | 2020 |
| SECURITYSTREET 1596153 · TMA877415 | Rapid7, LLC | 41 Education | Registered | 2014 |
| SECURITYSHELL 2235207 | SecureITShell | 9 Electronics42 Science | Pending | 2023 |
| Security + 2.0 1673541 · TMA1019048 | The Chamberlain Group LLC | 7 Machines9 Electronics | Registered | 2019 |
| Security 360 1494999 · TMA831119 | Both Talent International Limited | 9 Electronics42 Science | Registered | 2012 |
| SECURITYLINK 0790314 · TMA493147 | Tyco Integrated Security LLC | 9 Electronics37 Construction42 Science | Registered | 1998 |
| SECURITECH 1951881 · TMA1131340 | Owner not shown | 9 Electronics35 Advertising37 Construction+2 | Registered | 2022 |
| SECURITRANS 1888524 · TMA1065172 | 3SI Security Systems, Inc. | 9 Electronics18 Leather | Registered | 2019 |
| SEECURITY 1884790 · TMA1178161 | Amazon Technologies, Inc. | 8 Hand9 Electronics11 Lighting+5 | Registered | 2023 |
| SECURITRON 1622264 · TMA909190 · design | Hanchett Entry Systems, Inc. | 7 Machines9 Electronics | Registered | 2015 |
| SECURITAS 1613553 · TMA930016 · design | an individual | 5 Pharmaceuticals6 Metal9 Electronics+11 | Registered | 2016 |
| SECURITRANS 1342450 · TMA728384 | 3SI Security Systems, Inc. | 9 Electronics18 Leather | Registered | 2008 |