| DUCAR 1315381 · TMA721208 | MTI Canada inc. | 7 Machines35 Advertising | Registered | 2008 |
| DISCWEAR 1318997 · TMA764853 | My Sport Rocks, Inc. | 16 Paper24 Textiles25 Clothing+1 | Registered | 2010 |
| DUcare 2133514 · TMA1212021 | Shenzhen FengYiTang Technology Co. Ltd | 21 Housewares | Registered | 2023 |
| DUcare 2133355 · TMA1212007 | Shenzhen FengYiTang Technology Co. Ltd | 3 Cosmetics | Registered | 2023 |
| DOCKER 1866309 · TMA1094936 · design | Docker, Inc. a corporation legally organized under the laws of the state of Delaware | 9 Electronics | Registered | 2021 |
| DOCKER 1854319 · TMA1030115 | LAKES OF MUSKOKA COTTAGE BREWERY INC. | 33 Wine | Registered | 2019 |
| DAGGER 1795423 · TMA1007358 · design | Dagger Brew Corp. | 32 Beer | Registered | 2018 |
| DAGGER 1748670 · TMA1048753 | Parsons Xtreme Golf, LLC | 28 Toys | Registered | 2019 |
| DOCKER 1708851 · TMA1029500 | LAKES OF MUSKOKA COTTAGE BREWERY INC. | 32 Beer | Registered | 2019 |
| DOCKER 1662952 · TMA918822 · design | Docker, Inc. a corporation legally organized under the laws of the state of Delaware | 9 Electronics | Registered | 2015 |
| DOCKER 1654725 · TMA920086 | Docker, Inc. a corporation legally organized under the laws of the state of Delaware | 9 Electronics | Registered | 2015 |
| DAGGER 1535368 · TMA839817 | Citigroup Global Markets Inc. | 36 Finance | Registered | 2013 |
| DUCERA 1421007 · TMA759570 | DeguDent GmbH | 5 Pharmaceuticals | Registered | 2010 |
| DIAGER 0863232 · TMA503423 · design | Owner not shown | 7 Machines | Registered | 1998 |
| DECKER 0644702 · TMA378950 | DECKER MANAGEMENT LTD. | 37 Construction44 Medical | Registered | 1991 |
| DOCKER 0545381 · TMA323694 | LEVI STRAUSS NOVA SCOTIA ULC | 25 Clothing | Registered | 1987 |
| DUCRAY 0480277 · TMA303657 | an individual | 3 Cosmetics10 Medical | Registered | 1985 |
| DIGGER 2316950 | DK Crown Holdings Inc. | 41 Education | Pending | 2024 |
| DUCERE 2315689 · design | Ducere Global Business School Pty Ltd. | 41 Education | Pending | 2024 |
| DECKER 2266694 | Kimberly, LLC | 20 Furniture | Pending | 2023 |
| DAGGER 2261404 | Owner not listed | 5 Pharmaceuticals | Pending | 2023 |
| DEXERA 2260269 · TMA1279415 · design | Voyage Building Products Inc. | 6 Metal19 Building | Registered | 2024 |
| Deskhero 2255580 · TMA1276166 | Deskhero Inc | 9 Electronics | Registered | 2024 |
| DAKORIE 2247006 · TMA1265907 | Owner not listed | 9 Electronics | Registered | 2024 |
| DISIOR 2207419 · TMA1198282 | Paragon 28, Inc. | 42 Science | Registered | 2023 |