| WORKLAW 1266685 · TMA681926 | Labnet, Inc. | 42 Science45 Legal | Registered | 2007 |
| WORKLAB 2230979 | an individual | 20 Furniture | Pending | 2022 |
| WORKWELL 2208684 · TMA1241619 | an individual | 35 Advertising36 Finance | Registered | 2024 |
| WORKLIFE 2190636 · TMA1233759 | Proven Winners North America LLC | 31 Fresh | Registered | 2024 |
| WORKLION 2188763 · TMA1232745 · design | Dongguan Ouge Stationery Co. LTD | 16 Paper | Registered | 2024 |
| WORKLAND 1943906 · TMA1116056 · design | an individual | 9 Electronics | Registered | 2021 |
| Workland 1605929 · TMA891873 | Underdogs Power Corporation | 35 Advertising | Registered | 2014 |
| WORKLOAD 1603487 · TMA860388 · design | Walmart Apollo, LLC | 25 Clothing | Registered | 2013 |
| WORKLOAD 1580575 · TMA956818 · design | Walmart Apollo, LLC | 9 Electronics10 Medical25 Clothing | Registered | 2016 |
| WORKWELL 1480307 · TMA816957 | an individual | 5 Pharmaceuticals41 Education44 Medical+1 | Registered | 2012 |
| WORKLINX 1407685 · TMA803156 | an individual | 9 Electronics42 Science | Registered | 2011 |
| WorkLife 1078639 · TMA611541 | an individual | 9 Electronics16 Paper35 Advertising+3 | Registered | 2004 |
| WORKLOAD 0753894 · TMA476892 | Walmart Apollo, LLC | 9 Electronics10 Medical25 Clothing | Registered | 1997 |
| WORKLYTE 2307138 | 2811284 Ontario Ltd. | 9 Electronics11 Lighting16 Paper+2 | Pending | 2024 |
| WORKLEAP 2235959 | Technologies Workleap inc. | 42 Science | Pending | 2023 |
| WORKLOAD 2214701 | Walmart Apollo, LLC | 16 Paper24 Textiles | Pending | 2022 |
| WORKWOLF 2005460 · design | BlockAble Inc. | 9 Electronics35 Advertising42 Science | Pending | 2020 |
| WERKLAB 1956403 · TMA1275065 | Werklab Inc. | 35 Advertising36 Finance41 Education+2 | Registered | 2024 |
| WERKLIV 1859801 · TMA1143261 | WERKLIV GROUP INC. | 14 Jewellery25 Clothing35 Advertising+4 | Registered | 2022 |
| WORXLOG 1759836 · TMA997011 · design | i-Open Technologies Inc | 9 Electronics | Registered | 2018 |
| WORKCLEAR 2047434 · TMA1282073 · design | LifeLabs LP | 35 Advertising42 Science44 Medical | Registered | 2025 |
| WORKCLEAR 2047432 · TMA1282071 | LifeLabs LP | 35 Advertising42 Science44 Medical | Registered | 2025 |
| WORKSHELF 1761170 · TMA957653 | THREE H FURNITURE SYSTEMS LIMITED | 20 Furniture | Registered | 2016 |
| WORKALONE 1624527 · TMA893095 | AWARE360 LTD. | 9 Electronics42 Science44 Medical+1 | Registered | 2014 |
| WORKSCALE 1564219 · TMA886071 | Toker + Associates Architecture Industrial Design Ltd. | 35 Advertising | Registered | 2014 |