| DECTOVA 2021198 · TMA1211596 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2023 |
| DOCUdavit 1628019 · TMA896608 | DOCUdavit Solutions Inc. | 35 Advertising38 Telecommunications39 Transport+1 | Registered | 2015 |
| DECKDEFENSE 2215975 · TMA1245376 | Owens Corning Intellectual Capital LLC | 19 Building | Registered | 2024 |
| Destop 2212180 · TMA1245250 | an individual | 21 Housewares | Registered | 2024 |
| DESKTOPCOACH 2199929 · TMA1241249 · design | DesktopCoach Technologies Inc. | 41 Education | Registered | 2024 |
| DESTIVA 2199218 · TMA1282786 | an individual | 9 Electronics44 Medical | Registered | 2025 |
| DEGDEPLI 2185176 · TMA1218619 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2024 |
| DUSTYFACE 2145641 · TMA1272422 | Owner not shown | 3 Cosmetics | Registered | 2024 |
| DUXTOP 2077037 · TMA1164715 | Secura Inc | 11 Lighting21 Housewares | Registered | 2023 |
| DCTAPER 2057744 · TMA1130036 | SS WHITE BURS, INC. | 10 Medical | Registered | 2022 |
| DEESTOP 2040394 · TMA1146816 · design | Shenzhen Dingqitai Network Technology Co. Ltd. | 10 Medical28 Toys | Registered | 2022 |
| DOSEDIBLES 1924514 · TMA1229712 | an individual | 5 Pharmaceuticals | Registered | 2024 |
| DustPal 1823726 · TMA1073170 | an individual | 3 Cosmetics7 Machines21 Housewares | Registered | 2020 |
| DOGTOPIA 1785088 · TMA1024372 · design | TRUSTED AUTHORITY, LLC | 43 Restaurants44 Medical | Registered | 2019 |
| DoStuff 1745555 · TMA993126 | DoStuffMedia, LLC | 35 Advertising41 Education | Registered | 2018 |
| DASHDB 1708087 · TMA1004104 | INTERNATIONAL BUSINESS MACHINES CORPORATION | 9 Electronics38 Telecommunications42 Science | Registered | 2018 |
| DUCKTIVITY 1653850 · TMA956632 | Shurtape Technologies, LLC | 41 Education | Registered | 2016 |
| DEWSTOP 1632104 · TMA897644 | GTR Technologies, Inc. | 9 Electronics | Registered | 2015 |
| DOGTOPIA 1596541 · TMA903573 | TRUSTED AUTHORITY, LLC | 18 Leather20 Furniture21 Housewares+4 | Registered | 2015 |
| DOGTOPIA 1596540 · TMA903574 · design | TRUSTED AUTHORITY, LLC | 18 Leather20 Furniture21 Housewares+4 | Registered | 2015 |
| DUCKTIVITIES 1573855 · TMA900786 | Shurtape Technologies, LLC | 16 Paper17 Rubber28 Toys+2 | Registered | 2015 |
| DICTIOVI 1531425 · TMA830579 | R.M. LEDUC & CIE INC. | 16 Paper35 Advertising | Registered | 2012 |
| DIACTIVATEUR 1515160 · TMA869408 | an individual | 3 Cosmetics | Registered | 2014 |
| DictaPlus 1506439 · TMA831966 | Wolters Kluwer Deutschland GmbH | 9 Electronics | Registered | 2012 |
| DIGITUBES 1363548 · TMA833929 | Millet Innovation, SA à directoire | 3 Cosmetics5 Pharmaceuticals10 Medical+1 | Registered | 2012 |