| WORKPLACE21 1960940 · TMA1281616 | Workplace21, Inc. | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2025 |
| 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 |
| WORKFACE 1560644 · TMA841243 | Industrial Audit Corporation | 9 Electronics35 Advertising42 Science | Registered | 2013 |
| WORKPAC 1277784 · TMA681323 | CASCADES HOLDING US INC. | 21 Housewares | Registered | 2007 |
| WORKPLACEHUB 1826953 · TMA1130116 · design | Konica Minolta, Inc. | 9 Electronics10 Medical35 Advertising+4 | Registered | 2022 |
| WORKPLACE360 1543009 · TMA896305 | Hewlett Packard Enterprise Development LP | 42 Science | Registered | 2015 |
| WORKFORCE 2013163 · TMA1202365 | WESTLAKE DIMEX LLC | 27 Carpets | Registered | 2023 |
| Workpath 1999439 · TMA1120292 | Workpath GmbH | 9 Electronics16 Paper35 Advertising+2 | Registered | 2022 |
| WORKPULSE 1777615 · TMA1067412 | When I Work, Inc. | 42 Science | Registered | 2019 |
| WorksBase 1740099 · TMA949154 | an individual | 42 Science | Registered | 2016 |
| WORKWAVE 1733727 · TMA999382 | WorkWave LLC | 9 Electronics35 Advertising42 Science | Registered | 2018 |
| WORKPASS 1616245 · TMA921357 | Workpass Limited | 9 Electronics35 Advertising36 Finance+5 | Registered | 2015 |
| WORKFORCE 1519255 · TMA872355 | Seiko Epson Kabushiki Kaisha (also trading as Seiko Epson Corporation). | 2 Paints9 Electronics | Registered | 2014 |
| WORKFORCE 1373670 · TMA729901 | Seiko Epson Kabushiki Kaisha (also trading as Seiko Epson Corporation). | 9 Electronics | Registered | 2008 |
| WORKFORCE 0838647 · TMA673012 | Home Depot International, Inc. | 7 Machines8 Hand9 Electronics | Registered | 2006 |
| WORKSAFE 0684858 · TMA401752 | Wearwell, LLC | 27 Carpets | Registered | 1992 |
| WORKFORCE 0666385 · TMA403849 | Home Depot International, Inc. | 1 Chemicals2 Paints3 Cosmetics+11 | Registered | 1992 |
| WORKBASE 2333277 | Grey Matter Concepts Apparel Group Corp. | 25 Clothing | Pending | 2024 |
| Worqspace 2133555 | Ascenda Holdings, Inc. | 21 Housewares | Pending | 2021 |
| WORKFORCE 2079494 | Weems Industries, Inc. | 6 Metal7 Machines8 Hand+4 | Pending | 2021 |
| 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 |
| WORKOPTICS 1575049 · TMA892739 | Workoptics Inc. | 35 Advertising38 Telecommunications42 Science | Registered | 2014 |