| SERVOSOFT 1241410 · TMA652783 | CONTROLENG CORPORATION | 9 Electronics | Registered | 2005 |
| SERVISAIR 1497730 · TMA917026 · design | Swissport Group Services GmbH | 35 Advertising37 Construction39 Transport+3 | Registered | 2015 |
| SERVISTAR 1411744 · TMA762901 | Owner not shown | 36 Finance41 Education | Registered | 2010 |
| ServoSpot 1381020 · TMA791224 | DENGENSHA TOA CO. LTD. | 7 Machines9 Electronics | Registered | 2011 |
| SERVSAFE 1234150 · TMA718254 · design | The National Restaurant Association Educational Foundation | 9 Electronics16 Paper41 Education | Registered | 2008 |
| SERVSAFE 0887238 · TMA526931 | The National Restaurant Association Educational Foundation | 7 Machines9 Electronics16 Paper | Registered | 2000 |
| SERVSAFE 0821208 · TMA485883 | The National Restaurant Association Educational Foundation | 41 Education | Registered | 1997 |
| SERVICESOLV 1911863 · TMA1162830 | TD Synnex Corporation | 35 Advertising37 Construction40 Treatment+1 | Registered | 2023 |
| SERVICEGTG 2143806 | ELOMRIA GROUP LLC | 9 Electronics | Pending | 2021 |
| SERVICEPOINT 1930158 · TMA1155769 | Chubb INA Holdings LLC | 9 Electronics16 Paper37 Construction+1 | Registered | 2022 |
| SERVICESUITE 1168215 · TMA649226 | INTERNATIONAL BUSINESS MACHINES CORPORATION | 37 Construction42 Science | Registered | 2005 |
| SERVICEFIRST 0914752 | Municipal Property Assessment Corporation | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2003 |
| SERVUS 1944905 · TMA1190182 · design | Servus Credit Union Ltd. | 5 Pharmaceuticals9 Electronics14 Jewellery+9 | Registered | 2023 |
| SERVUS 1944904 · TMA1190181 · design | Servus Credit Union Ltd. | 5 Pharmaceuticals9 Electronics14 Jewellery+9 | Registered | 2023 |
| SERVUS 1855827 · TMA1059626 | Servus Credit Union Ltd. | 5 Pharmaceuticals9 Electronics14 Jewellery+10 | Registered | 2019 |
| SERVICITY 1716168 · TMA938125 · design | an individual | 35 Advertising | Registered | 2016 |
| SURVIOS 1681931 · TMA974085 | SURVIOS, INC. | 9 Electronics41 Education | Registered | 2017 |
| Servici.0 1621371 · TMA933792 | an individual | 35 Advertising41 Education | Registered | 2016 |
| Service 1 1551464 · TMA845594 | 2801477 CANADA INC. | 36 Finance37 Construction42 Science | Registered | 2013 |
| SERVICE 1 1551463 · TMA837765 · design | 2801477 CANADA INC. | 36 Finance37 Construction42 Science | Registered | 2012 |
| SERVCO 1541720 · TMA863843 | Smith International, Inc. | 7 Machines37 Construction | Registered | 2013 |
| SERVIQ 1508362 · TMA821142 | Corporation de services Genium360 | 35 Advertising36 Finance37 Construction+8 | Registered | 2012 |
| SERPICO 1242401 · TMA655466 | Mitolo Wines Pty Ltd | 33 Wine | Registered | 2005 |
| SERVIGARD 1153397 · TMA650376 | PHOENIX A.M.D. INTERNATIONAL INC. | 36 Finance37 Construction | Registered | 2005 |
| SERVICE 0856552 · TMA495249 · design | Metro Richelieu inc. | 35 Advertising | Registered | 1998 |