| DYNORAXX 1516867 · TMA827295 | DynoRaxx, Inc. | 6 Metal | Registered | 2012 |
| DYNARIC 0431215 · TMA252817 | PolyChem, LLC | 6 Metal7 Machines26 Sewing | Registered | 1980 |
| DYNARIC 0410592 · TMA233115 | PolyChem, LLC | 22 Ropes | Registered | 1979 |
| DENOREX 0390175 · TMA216154 | Neoteric Cosmetics, Inc. | 5 Pharmaceuticals | Registered | 1976 |
| Dumrock 2157459 · TMA1230089 | Shenzhen Panyun Technology Co. Ltd. | 28 Toys | Registered | 2024 |
| DHYANARSH 2129839 · TMA1217154 | an individual | 14 Jewellery | Registered | 2024 |
| DWINERSH 2091048 · TMA1222007 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2024 |
| Demeras 2076162 · TMA1154298 | SHENZHEN CHUJIN NETWORK TECHNOLOGY CO.LTD | 28 Toys | Registered | 2022 |
| DMARCIAN 2065826 · TMA1173343 | dmarcian, Inc. | 9 Electronics | Registered | 2023 |
| DAWNRISE 2026334 · TMA1142692 · design | ZHONGSHAN WINSTAR ELECTRICAL Co. Ltd. | 11 Lighting | Registered | 2022 |
| DEMAROCK 2003268 · TMA1257479 · design | Creighton Rock Drill Ltd. | 7 Machines | Registered | 2024 |
| DYNARECHI 1733009 · TMA998361 · design | DYNA RECHI CO. LTD. | 7 Machines12 Vehicles | Registered | 2018 |
| DOWNMARK 1732743 · TMA941385 · design | Down Association of Canada/Association Canadienne de Duvet | 9 Electronics12 Vehicles20 Furniture+5 | Registered | 2016 |
| DAMARK 1732319 · TMA942872 | Plexpack Corp. | 7 Machines | Registered | 2016 |
| DANAWARES 1701153 · TMA962668 · design | Danawares Corp | 35 Advertising | Registered | 2017 |
| DOWNMARK 1635404 · TMA922250 | Down Association of Canada/Association Canadienne de Duvet | 9 Electronics12 Vehicles20 Furniture+5 | Registered | 2015 |
| DOWNWORKS 1603385 · TMA918328 | Bedding Acquisition, LLC | 20 Furniture24 Textiles | Registered | 2015 |
| DonorClub 1582294 · TMA888105 | Redeo Marketing Inc. | 35 Advertising36 Finance40 Treatment | Registered | 2014 |
| DUMARC 1568440 · TMA865346 | an individual | 3 Cosmetics | Registered | 2013 |
| DEMARK 1544088 · TMA847457 | DeMark Analytics, LLC | 35 Advertising | Registered | 2013 |
| DINNERSPINNER 1496220 · TMA857500 | Allrecipes.com, Inc. | 9 Electronics | Registered | 2013 |
| DYNAWORKS 1465482 · TMA879303 | an individual | 9 Electronics42 Science | Registered | 2014 |
| 3DMERCURY 1435705 · TMA803007 · design | Gigazone International Co. Ltd. | 9 Electronics | Registered | 2011 |
| DOWNWORKS 1329377 · TMA822466 | Bedding Acquisition, LLC | 20 Furniture | Registered | 2012 |
| DOWNMARK 1278528 · TMA687132 | DOWN ASSOCIATION OF CANADA/ASSOCIATION CANADIENNE DU DUVET | 35 Advertising38 Telecommunications40 Treatment+1 | Registered | 2007 |