| DORUSA 0772701 · TMA477434 | DORCO CO. LTD. | 8 Hand | Registered | 1997 |
| DORIS 1704859 · TMA940853 | 2128933 Alberta Ltd. | 30 Coffee | Registered | 2016 |
| DORIS 0298741 · TMA151395 | Doris Inc. | 17 Rubber | Registered | 1967 |
| DOORES 2314959 · TMA1245709 · design | Owner not listed | 26 Sewing | Registered | 2024 |
| Doreso 2166666 · TMA1219880 | an individual | 9 Electronics | Registered | 2024 |
| DEROS 2136852 · TMA1205085 | Mirka Ltd | 7 Machines | Registered | 2023 |
| DIROS 2048577 · TMA1272276 | Diros Technology Inc. | 10 Medical | Registered | 2024 |
| DRS 1900452 · TMA1097159 | DRS, Inc. | 14 Jewellery | Registered | 2021 |
| DORZU 1887623 · TMA1062692 · design | Fuzhou Gaodesheng Electronic Technology Co. Ltd | 9 Electronics11 Lighting18 Leather | Registered | 2019 |
| DRS 1822685 · TMA1018817 | Dynamic Robotic Solutions, Inc. | 9 Electronics | Registered | 2019 |
| DORC 1736308 · TMA987748 · design | D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. | 5 Pharmaceuticals10 Medical | Registered | 2018 |
| DORC 1736307 · TMA983471 | D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. | 5 Pharmaceuticals10 Medical | Registered | 2017 |
| DRS 1707005 · TMA1059175 · design | an individual | 29 Meat30 Coffee32 Beer+1 | Registered | 2019 |
| DORIC 1697485 · TMA918688 · design | KRINOS FOODS CANADA LTD. | 29 Meat | Registered | 2015 |
| DORIC 1697471 · TMA919474 | KRINOS FOODS CANADA LTD. | 29 Meat | Registered | 2015 |
| DRS 1650775 · TMA893572 | an individual | 42 Science44 Medical | Registered | 2015 |
| DRÜGS 1619367 · TMA917557 | an individual | 9 Electronics14 Jewellery18 Leather+2 | Registered | 2015 |
| DRUGS 1619364 · TMA917556 | an individual | 9 Electronics14 Jewellery18 Leather+2 | Registered | 2015 |
| DRS 1577240 · TMA846492 | an individual | 11 Lighting35 Advertising40 Treatment | Registered | 2013 |
| DORIC 1562140 · TMA843032 | DORIC PRODUCTS, INC. | 1 Chemicals6 Metal19 Building+3 | Registered | 2013 |
| DORIC 1562139 · TMA843031 · design | DORIC PRODUCTS, INC. | 1 Chemicals6 Metal19 Building+3 | Registered | 2013 |
| DORYX 1503303 · TMA824890 | Mayne Pharma International Pty Ltd | 5 Pharmaceuticals | Registered | 2012 |
| DRS 1425931 · TMA765649 | Callaway Golf Company | 28 Toys | Registered | 2010 |
| DUROS 1390507 · TMA741487 | ALZA CORPORATION | 5 Pharmaceuticals10 Medical | Registered | 2009 |
| 3DORS 1374050 · TMA747121 | Dynamic Employment Solutions Inc. | 35 Advertising | Registered | 2009 |