| WESTGUARD 1337299 · TMA716715 | The Wawanesa Life Insurance Company | 35 Advertising36 Finance | Registered | 2008 |
| WESTCAP 2087594 · TMA1224243 | Westcap Mgt. Ltd. | 35 Advertising36 Finance | Registered | 2024 |
| WESTCAN 2054205 · TMA1275424 | Westcan Health & Safety Ltd. | 5 Pharmaceuticals10 Medical21 Housewares | Registered | 2024 |
| WESTCOAT 1909504 · TMA1136845 | Pacific Pebbles Corporation | 2 Paints19 Building | Registered | 2022 |
| WESTJET 1889601 · TMA1069247 · design | WESTJET AIRLINES LTD. | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2020 |
| WESTJET 1889600 · TMA1054301 · design | WESTJET AIRLINES LTD. | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2019 |
| WESTJET 1889599 · TMA1074417 · design | WestJet Brand LP | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2020 |
| WESTJET 1889598 · TMA1071416 · design | WestJet Brand LP | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2020 |
| WESTJET 1839787 · TMA1052450 · design | WESTJET AIRLINES LTD. | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2019 |
| WESTJET 1839786 · TMA1052449 · design | WESTJET AIRLINES LTD. | 9 Electronics14 Jewellery16 Paper+10 | Registered | 2019 |
| WESTJET 1737258 · TMA996620 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+11 | Registered | 2018 |
| WESTJET 1737257 · TMA996621 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+11 | Registered | 2018 |
| WESTAC 1382472 · TMA746514 | Western Transportation Advisory Council, a legal entity | 35 Advertising39 Transport41 Education | Registered | 2009 |
| WESTCOTT 1358220 · TMA746443 | ACME UNITED CORPORATION | 8 Hand9 Electronics16 Paper | Registered | 2009 |
| WESTCAN 1310809 · TMA694534 | CTG Brands Inc. | 35 Advertising | Registered | 2007 |
| WESTJET 1236278 · TMA656241 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+10 | Registered | 2006 |
| WESTJET 1236275 · TMA656240 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+10 | Registered | 2006 |
| WESTJET 1236272 · TMA651039 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+10 | Registered | 2005 |
| WESTJET 1236268 · TMA656341 · design | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+10 | Registered | 2006 |
| WESTJET 1236267 · TMA651001 | WestJet Brand LP | 12 Vehicles14 Jewellery16 Paper+10 | Registered | 2005 |
| WESTGEN 0891640 · TMA524286 | WESTGEN, WESTERN CANADA'S GENETICS CENTRE | 5 Pharmaceuticals44 Medical | Registered | 2000 |
| WESTJET 0789749 · TMA480424 | WESTJET AIRLINES LTD. | 12 Vehicles39 Transport | Registered | 1997 |
| WESTCODE 0357250 · TMA201269 | SIEMENS MOBILITY LIMITED | 7 Machines9 Electronics | Registered | 1974 |
| WESTCOTT 0297767 · TMA155740 · design | ACME UNITED CORPORATION | 9 Electronics16 Paper | Registered | 1968 |
| WESTCODE 0263346 · TMA124445 | SIEMENS MOBILITY LIMITED | 12 Vehicles | Registered | 1961 |