| DICAN 1960179 · TMA1281622 · design | DiCAN Inc. | 9 Electronics35 Advertising37 Construction+2 | Registered | 2025 |
| DICAN 1960166 · TMA1281623 | DiCAN Inc. | 9 Electronics11 Lighting37 Construction+2 | Registered | 2025 |
| DaKuan 1919004 · TMA1109143 | Shen Zhen Shi Da Kuan Chuang Fu Science and Technology Ltd. | 6 Metal8 Hand9 Electronics+4 | Registered | 2021 |
| DIGION 1110201 · TMA633262 | DigiOn Inc. | 9 Electronics42 Science | Registered | 2005 |
| DOGAN 2297364 | Owner not listed | 39 Transport41 Education | Pending | 2023 |
| DAQUAN 2085066 | COMEDY TECHNOLOGIES, INC. | 38 Telecommunications41 Education | Pending | 2021 |
| DIASCAN 1208459 · TMA740694 | an individual | 9 Electronics10 Medical | Registered | 2009 |
| dokkan 2176060 · TMA1264017 | HERB KENKO HONPO INC. | 5 Pharmaceuticals | Registered | 2024 |
| Ducaan 2154919 · TMA1206549 | Owner not shown | 24 Textiles | Registered | 2023 |
| DEGSON 2061997 · TMA1202553 · design | NINGBO DEGSON ELECTRONICS CO. LTD. | 35 Advertising | Registered | 2023 |
| DIXON 1941220 · TMA1083179 · design | DIXON TICONDEROGA COMPANY. | 9 Electronics16 Paper | Registered | 2020 |
| DEGSON 1914371 · TMA1116717 · design | NINGBO DEGSON ELECTRONICS CO. LTD. | 9 Electronics | Registered | 2021 |
| DICUNO 1901272 · TMA1084521 · design | Fu Zhou Di Qiu Technology Co. Ltd. | 11 Lighting | Registered | 2020 |
| DIOSN 1784070 · TMA972450 · design | an individual | 9 Electronics22 Ropes25 Clothing+1 | Registered | 2017 |
| DIKSON 1733924 · TMA948069 · design | Owner not shown | 3 Cosmetics | Registered | 2016 |
| DOOSAN 1627257 · TMA939349 · design | Doosan Corporation | 1 Chemicals4 Oils7 Machines+2 | Registered | 2016 |
| DOOSAN 1627256 · TMA939200 | Doosan Corporation | 1 Chemicals4 Oils7 Machines+3 | Registered | 2016 |
| DOOSAN 1627248 · TMA933701 · design | Doosan Corporation | 11 Lighting37 Construction | Registered | 2016 |
| DOKKAN 1595543 · TMA916749 | DOKKAN CANADIAN INTERNATIONAL INVESTMENT CORPORATION | 29 Meat30 Coffee35 Advertising+1 | Registered | 2015 |
| DOGMA 1594675 · TMA934987 · design | an individual | 14 Jewellery16 Paper18 Leather+4 | Registered | 2016 |
| DIGIUM 1575958 · TMA887040 | DIGIUM INC. | 9 Electronics38 Telecommunications41 Education+1 | Registered | 2014 |
| DUKAN 1570972 · TMA879175 | Diet Coaching, Inc. | 38 Telecommunications41 Education42 Science+2 | Registered | 2014 |
| DOOSAN 1485333 · TMA850549 · design | Doosan Corporation | 7 Machines9 Electronics11 Lighting+2 | Registered | 2013 |
| DOOSAN 1485329 · TMA850520 · design | Doosan Corporation | 7 Machines9 Electronics11 Lighting+2 | Registered | 2013 |
| DEGSON 1325778 · TMA717883 | NINGBO DEGSON ELECTRONICS CO. LTD. | 7 Machines9 Electronics | Registered | 2008 |