| WATERSEER 1813835 · TMA996108 · design | Shanghai Trustech Technology Development Co. Ltd | 10 Medical11 Lighting21 Housewares | Registered | 2018 |
| WaterSense 1541594 · TMA840559 | an individual | 31 Fresh | Registered | 2013 |
| WATERGEN 2011599 · TMA1137363 | WATERGEN LTD. | 11 Lighting | Registered | 2022 |
| WATERCITY 1854781 · TMA1074019 | CORE & MAIN LP | 38 Telecommunications | Registered | 2020 |
| WATERGENIE 1260422 · TMA675726 | Owner not shown | 7 Machines11 Lighting | Registered | 2006 |
| WATERSCENE 1074009 · TMA566791 | Waterscene Designs Inc. | 1 Chemicals6 Metal11 Lighting+9 | Registered | 2002 |
| WATERSOFT 0844789 · TMA490916 · design | B.V. WATERSOFT B.C. LTD. | 1 Chemicals7 Machines11 Lighting+4 | Registered | 1998 |
| WATERESTORE 2284845 | Owner not listed | 1 Chemicals11 Lighting25 Clothing+3 | Pending | 2023 |
| WATERSHEDGEO 1716167 · TMA990256 | Watershed Geosynthetics LLC, Limited Liability Company under the laws of the State of Georgia, U.S.A | 19 Building27 Carpets | Registered | 2018 |
| WATERSTAGE 2143181 · TMA1284308 | FUJITSU GENERAL LIMITED | 9 Electronics11 Lighting | Registered | 2025 |
| WATERSTAGE 2143180 · TMA1284307 · design | FUJITSU GENERAL LIMITED | 9 Electronics11 Lighting | Registered | 2025 |
| WATERSHIP 2113604 · TMA1181795 · design | an individual | 35 Advertising | Registered | 2023 |
| WATERSHED 2049345 · TMA1164546 | Watershed Technology, Inc. | 9 Electronics42 Science | Registered | 2023 |
| WATERSHIELD 1996570 · TMA1255869 | GOODMORNING.COM INC. | 20 Furniture24 Textiles35 Advertising | Registered | 2024 |
| WATERCOAT 1995606 · TMA1148761 · design | Nissan Chemical Corporation | 1 Chemicals3 Cosmetics | Registered | 2022 |
| WATERCLEAR 1968480 · TMA1283639 | Fluid Clarification LP | 40 Treatment42 Science | Registered | 2025 |
| WATERKING 1850478 · TMA1013306 | BORDER CHEMICAL COMPANY LIMITED | 1 Chemicals | Registered | 2019 |
| WATERS 1846068 · TMA1095044 | Waters Technologies Corporation | 1 Chemicals9 Electronics35 Advertising+3 | Registered | 2021 |
| WATERSTEEL 1831454 · TMA1005095 | Entreprises Shippagan Ltée | 22 Ropes | Registered | 2018 |
| WATERSIDE 1824296 · TMA1024605 | an individual | 16 Paper44 Medical | Registered | 2019 |
| WATERSHED 1718301 · TMA1002824 · design | SanEcoTec Ltd. | 11 Lighting | Registered | 2018 |
| WATERSHED 1708594 · TMA1028876 | 1016563 B.C. LTD. | 3 Cosmetics6 Metal8 Hand+23 | Registered | 2019 |
| WATERWEIGHT 1707165 · TMA999552 | ESTEE LAUDER COSMETICS LTD. | 3 Cosmetics | Registered | 2018 |
| WATERSCAPES 1631091 · TMA886013 | Mattamy (Monarch) Limited | 36 Finance37 Construction | Registered | 2014 |
| WATERSYS 1611815 · TMA904039 | Procesco Inc. | 6 Metal7 Machines9 Electronics+3 | Registered | 2015 |