| DOTECO 1310892 · TMA745678 · design | an individual | 7 Machines9 Electronics | Registered | 2009 |
| DOTCO 0756841 · TMA456588 | Apex Brands, Inc. | 6 Metal7 Machines8 Hand | Registered | 1996 |
| DoItEco 2250201 | SAMSUNG ELECTRONICS CO. LTD. | 7 Machines9 Electronics11 Lighting | Pending | 2023 |
| DOTCH 1935100 · TMA1123791 | TCL Communication Technology Holdings Limited | 9 Electronics | Registered | 2022 |
| DOTC 1856253 · TMA1016095 | DotC United Inc | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2019 |
| DODUCO 1516275 · TMA964963 | Doduco GmbH | 9 Electronics14 Jewellery40 Treatment | Registered | 2017 |
| DETICA 1233151 · TMA781638 | BAE SYSTEMS plc | 9 Electronics16 Paper35 Advertising+4 | Registered | 2010 |
| DIETICA 0801084 · TMA480336 | Owner not shown | 1 Chemicals3 Cosmetics4 Oils+2 | Registered | 1997 |
| DETIKO 2359035 · design | Shenzhen Zhishengquwu Technology Co. Ltd. | 9 Electronics | Pending | 2024 |
| DuOtic 2211274 | Dechra Limited | 5 Pharmaceuticals | Pending | 2022 |
| Diydeg 2228584 · TMA1252790 | Shenzhen Kelingli Technology Co. Ltd. | 11 Lighting20 Furniture21 Housewares | Registered | 2024 |
| DOODOGS 2193786 · TMA1218751 · design | Jinjang Xuanyu Trade Co. Ltd. | 25 Clothing | Registered | 2024 |
| DOTSHA 2171722 · TMA1282596 · design | DOTSHA | 38 Telecommunications | Registered | 2025 |
| DIDK 2144468 · TMA1230029 | SHENHE INTERNATIONAL HOLDING GROUP CO., LIMITED | 25 Clothing | Registered | 2024 |
| DEDICA 2120748 · TMA1222093 | an individual | 7 Machines11 Lighting | Registered | 2024 |
| DUTZW 2103486 · TMA1189543 | an individual | 3 Cosmetics | Registered | 2023 |
| datasy 2088042 · TMA1184882 | Shanghai Pinteng Electronic Commerce Co. Ltd. | 25 Clothing | Registered | 2023 |
| DIYTEACH 2070934 · TMA1160328 · design | Zhejiang Teach E-Commerce Co.Ltd | 6 Metal | Registered | 2023 |
| DODECA 2048769 · TMA1167936 | Matthew McCormick Studio Inc. | 11 Lighting | Registered | 2023 |
| DITEC 1937383 · TMA1144979 | an individual | 6 Metal7 Machines9 Electronics+2 | Registered | 2022 |
| dieWATCH 1910293 · TMA1146332 | TR ELECTRONICS CANADA INC. | 9 Electronics | Registered | 2022 |
| DUOTEX 1909044 · TMA1103752 | LYDALL, INC. | 17 Rubber | Registered | 2021 |
| DETUOSI 1908420 · TMA1096297 · design | Shenzhen Bisituo Technology Co.Ltd | 9 Electronics | Registered | 2021 |
| DUOTECH 1868664 · TMA1081610 · design | Keter Plastic Ltd. | 21 Housewares | Registered | 2020 |
| DAYTEK 1867889 · TMA1104934 | DAYTEK AUSTRALIA PTY LTD. | 6 Metal7 Machines8 Hand+5 | Registered | 2021 |