| DURON 1782749 · TMA1037298 | an individual | 9 Electronics11 Lighting | Registered | 2019 |
| DRAWN 1461627 · TMA813610 | Big Fish Games, Inc. | 9 Electronics41 Education | Registered | 2011 |
| DERAIN 1364976 · TMA760569 · design | WOLFERS 1812 SA | 14 Jewellery | Registered | 2010 |
| DURON 1134685 · TMA587475 | Duron Ontario Ltd. | 37 Construction39 Transport | Registered | 2003 |
| DURON 1096520 · TMA614406 | WALTER SURFACE TECHNOLOGIES INC. | 7 Machines | Registered | 2004 |
| DURON 1004972 · TMA531659 | Petro-Canada Lubricants Inc. | 4 Oils | Registered | 2000 |
| DORON 0770498 · TMA454389 | DORON PRECISION SYSTEMS, INC. | 9 Electronics | Registered | 1996 |
| DEROMA 0607880 · TMA359348 | an individual | 21 Housewares | Registered | 1989 |
| DEERRUN 2289737 | Owner not listed | 28 Toys | Pending | 2023 |
| DERENA 2151172 · TMA1223025 | DR. BABOR GMBH & CO. KG | 3 Cosmetics | Registered | 2024 |
| DARWIN 2069828 · TMA1135846 | Keter Home and Garden Products Ltd. | 19 Building | Registered | 2022 |
| DROIAN 2065077 · TMA1172235 · design | Droian Workstation LLC. | 9 Electronics20 Furniture | Registered | 2023 |
| DARWIN 1860145 · TMA1092953 | Delos Living LLC | 9 Electronics16 Paper42 Science | Registered | 2021 |
| DARWEN 1806260 · TMA1069048 | Pentavere Research Group Inc. | 35 Advertising42 Science | Registered | 2020 |
| DRONE 1748672 · TMA1048755 | Parsons Xtreme Golf, LLC | 28 Toys | Registered | 2019 |
| DIREN 1610458 · TMA888014 · design | Owner not shown | 33 Wine | Registered | 2014 |
| DURUN 1516376 · TMA818253 · design | SHANDONG QILUN RUBBER CO.LTD | 1 Chemicals7 Machines12 Vehicles+2 | Registered | 2012 |
| DRONE 1469645 · TMA798304 | Firstech, LLC | 9 Electronics | Registered | 2011 |
| DROME 1450519 · TMA775567 | TouchBistro Inc. | 9 Electronics | Registered | 2010 |
| DORIAN 0814671 · TMA514145 | Owner not shown | 29 Meat | Registered | 1999 |
| DORIAN 0746913 · TMA441050 | ASSA ABLOY Americas Residential Inc. | 6 Metal8 Hand20 Furniture | Registered | 1995 |
| DURAN 0654014 · TMA380992 | DWK Life Sciences GmbH | 9 Electronics21 Housewares | Registered | 1991 |
| DROM 0476416 · TMA271365 | Givaudan SA | 1 Chemicals3 Cosmetics | Registered | 1982 |
| DURAN 0223172 · UCA50837 | DWK Life Sciences GmbH | 1 Chemicals9 Electronics11 Lighting+1 | Registered | 1954 |
| DURAN. 0207657 · UCA38733 | Uniroyal Engineered Products, LLC | 20 Furniture | Registered | 1950 |