| DoItEco 2250201 | SAMSUNG ELECTRONICS CO. LTD. | 7 Machines9 Electronics11 Lighting | Pending | 2023 |
| DOTCO 0756841 · TMA456588 | Apex Brands, Inc. | 6 Metal7 Machines8 Hand | Registered | 1996 |
| DUOTECH 1868664 · TMA1081610 · design | Keter Plastic Ltd. | 21 Housewares | Registered | 2020 |
| DUOTECH 1825157 · TMA1064806 · design | Keter Plastic Ltd. | 20 Furniture | Registered | 2019 |
| DUOTECH 1798711 · TMA1050825 · design | Keter Plastic Ltd. | 19 Building | Registered | 2019 |
| DOTTICO 2334346 | an individual | 9 Electronics | Pending | 2024 |
| DODECA 2048769 · TMA1167936 | Matthew McCormick Studio Inc. | 11 Lighting | Registered | 2023 |
| DITEC 1937383 · TMA1144979 | an individual | 6 Metal7 Machines9 Electronics+2 | Registered | 2022 |
| 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 |
| DYTEC 1531008 · TMA845173 · design | NANTONG QIANGSHENG NEW MATERIALS TECHNOLOGY CO. LTD. | 6 Metal9 Electronics10 Medical+1 | Registered | 2013 |
| DODUCO 1516275 · TMA964963 | Doduco GmbH | 9 Electronics14 Jewellery40 Treatment | Registered | 2017 |
| DIDECO 1134589 · TMA608918 | an individual | 6 Metal7 Machines10 Medical | Registered | 2004 |
| DUTECH 0897136 · TMA526785 | DUTECH MACHINERIE LTÉE | 6 Metal7 Machines16 Paper+2 | Registered | 2000 |
| DOTEKI 2350988 | TOMY International, Inc. | 28 Toys | Pending | 2024 |
| DUOTACK 1612466 · TMA870531 | GESTION SOPREMA CANADA INC. | 1 Chemicals | Registered | 2014 |
| Doteasy 1187743 · TMA637785 | WORLD HOST GROUP CA CORP. | 42 Science | Registered | 2005 |
| DIATECH 0722428 · TMA421647 | Owner not shown | 10 Medical | Registered | 1993 |
| DIATECH 2308222 · design | Owner not shown | 10 Medical | Pending | 2024 |
| DAYTECH 2185008 · design | QUANZHOU DAYTECH ELECTRONICS CO. LTD. | 9 Electronics | 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 |