| DATAGLOBE 0784401 · TMA458158 | DATAGLOBE CANADA INC. | 35 Advertising | Registered | 1996 |
| DATAGALAXY 1808100 · TMA1020878 | Owner not shown | 9 Electronics42 Science | Registered | 2019 |
| DATAGLIDER 1034611 · TMA554783 | C.E.C. Industrial Consultants Inc. | 9 Electronics10 Medical | Registered | 2001 |
| DUTAZLY 2300597 | Owner not listed | 5 Pharmaceuticals | Pending | 2023 |
| DATACLOUD 1922458 | Reflex USA LLC | 9 Electronics35 Advertising42 Science | Pending | 2018 |
| DEDCOOL 2261166 · TMA1241977 · design | Owner not listed | 3 Cosmetics | Registered | 2024 |
| DOODYCALLS 2236027 · TMA1258073 · design | DoodyCalls Intellectual Property LLC | 37 Construction | Registered | 2024 |
| DEDCOOL 2222931 · TMA1240432 | DedCool, Inc. | 3 Cosmetics | Registered | 2024 |
| DUTTYGYAL 2051078 · TMA1152921 | an individual | 25 Clothing | Registered | 2022 |
| DUDYSLA 1960945 · TMA1224719 | BGP Products Operations GmbH | 5 Pharmaceuticals | Registered | 2024 |
| Dodocool 1917725 · TMA1097193 | Shenzhen Tomtao International Trading Co. Ltd | 9 Electronics | Registered | 2021 |
| DietGel 1615350 · TMA876768 | ClearH2O, Inc. | 5 Pharmaceuticals | Registered | 2014 |
| DOODYCALLS 1575688 · TMA855840 | DoodyCalls Intellectual Property LLC | 37 Construction | Registered | 2013 |
| DUTCHLAND 1547228 · TMA847851 | Dutchland, LLC | 37 Construction40 Treatment | Registered | 2013 |
| DETAGEL 1407731 · TMA758322 | Orica Explosives Technology Pty Ltd. | 13 Firearms | Registered | 2010 |
| DETACHOL 1106468 · TMA579117 | Ferndale IP, Inc. (a Michigan corporation) | 5 Pharmaceuticals | Registered | 2003 |
| DATASHIELD 0846731 · TMA495485 | Comtran Cable LLC | 9 Electronics | Registered | 1998 |
| DATASEAL 0740579 · TMA449802 | DATA Communications Management Corp./Gestion Des Communications DATA Corp. | 16 Paper35 Advertising40 Treatment+1 | Registered | 1995 |
| DITZLER 0194968 · UCA26877 | PPG Industries Ohio, Inc. (a Delaware corporation) | 1 Chemicals2 Paints3 Cosmetics+4 | Registered | 1947 |
| DETACLAD 2306878 | DMC GLOBAL INC. | 40 Treatment | Pending | 2023 |
| Datchowlip 2306491 | Shanghai Wuting Trading Co. Ltd | 21 Housewares | Pending | 2024 |
| DITAGIL 2204070 | 9454-0911 Québec inc. | 42 Science | Pending | 2022 |
| DieTaggels 2163621 | an individual | 3 Cosmetics9 Electronics16 Paper+2 | Pending | 2021 |
| DUTCHLICIOUS 2053944 · design | Dutchlicious Food Services Inc. | 29 Meat35 Advertising43 Restaurants+1 | Pending | 2020 |