| WORKABLE 1948666 · TMA1230881 | Workable Technology Limited | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2024 |
| Workbrain 1038871 · TMA559096 | Infor IP Holdings, LLC | 9 Electronics30 Coffee35 Advertising+3 | Registered | 2002 |
| WORKXBIB 2373385 | Owner not shown | 12 Vehicles | Pending | 2024 |
| WorkSafeNB 0919538 | Workplace Health, Safety and Compensation Commission / Commission de la santé, de la sécurité et de l'indemnisation des accidents au travail | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2009 |
| WORKBOT 2083873 · TMA1259211 | WORKATO, Inc. | 9 Electronics42 Science | Registered | 2024 |
| WORKFACTA 2074334 · TMA1280400 | Global BM Platform Pty Ltd | 9 Electronics35 Advertising41 Education+1 | Registered | 2025 |
| Workpath 1999439 · TMA1120292 | Workpath GmbH | 9 Electronics16 Paper35 Advertising+2 | Registered | 2022 |
| WORKFIL 1936511 · TMA1111172 | Filspec Inc. | 23 Yarns | Registered | 2021 |
| WORKFIT 1812364 · TMA1001485 | Ergotron, Inc. | 9 Electronics20 Furniture | Registered | 2018 |
| WORKWAVE 1733727 · TMA999382 | WorkWave LLC | 9 Electronics35 Advertising42 Science | Registered | 2018 |
| WORKPASS 1616245 · TMA921357 | Workpass Limited | 9 Electronics35 Advertising36 Finance+5 | Registered | 2015 |
| WORKFACE 1560644 · TMA841243 | Industrial Audit Corporation | 9 Electronics35 Advertising42 Science | Registered | 2013 |
| WORKPAC 1277784 · TMA681323 | CASCADES HOLDING US INC. | 21 Housewares | Registered | 2007 |
| WORKSPAN 1276662 · TMA680900 | WorldatWork | 16 Paper | Registered | 2007 |
| WORKSAFE 0684858 · TMA401752 | Wearwell, LLC | 27 Carpets | Registered | 1992 |
| WORKBASE 2333277 | Grey Matter Concepts Apparel Group Corp. | 25 Clothing | Pending | 2024 |
| WORKSAFE 0923189 · design | Electrical Safety Authority | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2015 |
| WORKSCAPE 0919585 | CANADIAN CENTRE FOR OCCUPATIONAL HEALTH AND SAFETY | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2010 |
| WORKSAFE 0909321 · design | WORKER'S COMPENSATION BOARD OF BRITISH COLUMBIA | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1997 |
| WORKABILITY 1798620 · TMA992848 | TEKSmed Services Inc. | 36 Finance | Registered | 2018 |
| WORKPLACENL 0923636 · design | the Workplace Health, Safety and Compensation Commission of Newfoundland and Labrador | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2016 |
| WORKPLACENL 0923635 | The Workplace Health, Safety and Compensation Commission | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2016 |
| WorkforceWins 1819289 · TMA995892 | Workforce Wins Ltd. | 35 Advertising | Registered | 2018 |
| WearSPF 2222546 · TMA1239046 | WEARSPF, LLC | 3 Cosmetics | Registered | 2024 |
| WeAreCyber 2214651 · TMA1249151 | siberX | 38 Telecommunications41 Education | Registered | 2024 |