| DEAKO 1893934 · TMA1111694 | Deako, Inc. | 9 Electronics11 Lighting20 Furniture | Registered | 2021 |
| DEKO 1848948 · TMA1156645 | 7912854 CANADA INC. | 20 Furniture | Registered | 2022 |
| DEKO 1350542 · TMA717113 · design | Advantage Cochrane Sport Inc / Avantage Cochrane Sport Inc | 19 Building | Registered | 2008 |
| DEXCO 0892168 · TMA551453 | Corporation Dexco/Dexco Corporation | 9 Electronics35 Advertising42 Science | Registered | 2001 |
| DEXCO 0891748 · TMA551339 · design | Corporation Dexco/Dexco Corporation | 9 Electronics35 Advertising42 Science | Registered | 2001 |
| DECKO 2358318 | Michel Sales Company | 6 Metal7 Machines9 Electronics+2 | Pending | 2024 |
| DEKKO 1991219 | Group Dekko, Inc. | 9 Electronics11 Lighting40 Treatment | Pending | 2019 |
| DESKEO 2361780 | KNOTEL HOLDINGS, LLC | 35 Advertising36 Finance38 Telecommunications+3 | Pending | 2023 |
| DECO 2271624 · TMA1266078 | Owner not listed | 11 Lighting | Registered | 2024 |
| DESKY 2176357 · TMA1259453 | DESKY PTY LTD | 20 Furniture35 Advertising | Registered | 2024 |
| DEKS 2166970 · TMA1254869 · design | Deks Industries Pty Ltd | 4 Oils6 Metal17 Rubber+1 | Registered | 2024 |
| DEKCO 2159247 · TMA1219205 · design | GLAZERO INTERNATIONAL INC | 9 Electronics | Registered | 2024 |
| DEIK 2092070 · TMA1171348 | Aukey Technology Co., Ltd | 8 Hand | Registered | 2023 |
| DOKO 2079518 · TMA1183693 | Keilhauer Ltd. | 20 Furniture | Registered | 2023 |
| DEXI 2065404 · TMA1156407 | an individual | 27 Carpets | Registered | 2022 |
| DEKA 2009173 · TMA1281924 | Spartan Race, Inc. | 41 Education | Registered | 2025 |
| DEX 2008807 · TMA1262318 | SAMSUNG ELECTRONICS CO. LTD. | 9 Electronics | Registered | 2024 |
| DEK 1993034 · TMA1193169 | Keilhauer Ltd. | 20 Furniture | Registered | 2023 |
| DAKO 1983625 · TMA1135458 · design | Owner not shown | 6 Metal19 Building35 Advertising | Registered | 2022 |
| DAKO 1982753 · TMA1135455 | Owner not shown | 6 Metal19 Building35 Advertising | Registered | 2022 |
| DEX 1942713 · TMA1196228 · design | an individual | 9 Electronics37 Construction | Registered | 2023 |
| DEK2 1871399 · TMA1053929 | an individual | 28 Toys | Registered | 2019 |
| DECO 1818357 · TMA1038924 · design | G-Mode Corporation | 9 Electronics25 Clothing28 Toys+1 | Registered | 2019 |
| DEK 1768321 · TMA1043653 | Winners Products Engineering Canada Ltd. | 11 Lighting21 Housewares | Registered | 2019 |
| DAKKO 1734323 · TMA990560 · design | JIN FU Technology Corporation Limited | 7 Machines8 Hand16 Paper | Registered | 2018 |