| DUOTEX 1909044 · TMA1103752 | LYDALL, INC. | 17 Rubber | Registered | 2021 |
| DETEX 1591448 · TMA911391 | ILLINOIS TOOL WORKS INC. | 4 Oils | Registered | 2015 |
| DETEX 1119124 · TMA601311 | DETEX CORPORATION | 6 Metal9 Electronics14 Jewellery+1 | Registered | 2004 |
| DETEX 0157568 · TMDA54850 | DETEX CORPORATION | 6 Metal9 Electronics14 Jewellery+2 | Registered | 1932 |
| DIETEX 1269279 · TMA721463 | Energy Beverages LLC | 5 Pharmaceuticals | Registered | 2008 |
| DIOTEX 0992202 · NFLD2202 · design | LINN DALE JOHNSON, WARREN WILLIAM BURGESS AND RICHARD T. ALDWORTH TRADING UNDER THE NAME AND STYLE OF THE KNOX COMPANY | 1 Chemicals | Registered | 1937 |
| DUTECH 0897136 · TMA526785 | DUTECH MACHINERIE LTÉE | 6 Metal7 Machines16 Paper+2 | Registered | 2000 |
| Duttek 2219192 | Shenzhen WeiLuoHua Electronics Co. Ltd. | 9 Electronics | Pending | 2022 |
| DUTCHX 2100817 | Dutch Express, LLC | 35 Advertising39 Transport | Pending | 2021 |
| DUTZW 2103486 · TMA1189543 | an individual | 3 Cosmetics | Registered | 2023 |
| DITEC 1937383 · TMA1144979 | an individual | 6 Metal7 Machines9 Electronics+2 | Registered | 2022 |
| DITEK 1804716 · TMA995152 · design | Diversified Technology Group, Inc. | 9 Electronics42 Science | Registered | 2018 |
| DITEK 1804491 · TMA995171 | Diversified Technology Group, Inc. | 9 Electronics42 Science | Registered | 2018 |
| DYTEC 1531008 · TMA845173 · design | NANTONG QIANGSHENG NEW MATERIALS TECHNOLOGY CO. LTD. | 6 Metal9 Electronics10 Medical+1 | Registered | 2013 |
| DATIX 1459170 · TMA844009 | Datix Limited | 9 Electronics41 Education42 Science | Registered | 2013 |
| DUDES 1437639 · TMA775978 · design | Abercrombie & Fitch Trading Co. | 35 Advertising | Registered | 2010 |
| DETOX 1240039 · TMA648597 | STARWOOD HOTELS & RESORTS WORLDWIDE, LLC | 41 Education | Registered | 2005 |
| DYTEK 1005013 · TMA535280 | INVISTA Textiles (U.K.) Limited | 1 Chemicals | Registered | 2000 |
| DADEX 0460198 · TMA258351 | CALDIC CANADA INC. | 1 Chemicals3 Cosmetics5 Pharmaceuticals+1 | Registered | 1981 |
| DEDEX 2374511 | Scattered Brains, Inc. | 9 Electronics41 Education42 Science | Pending | 2024 |
| DATEG 2262753 | Owner not listed | 9 Electronics | Pending | 2023 |
| DUTCH 1964551 | Precision Analytical Inc. | 42 Science44 Medical | Pending | 2019 |
| 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 |