| Decflow 2272283 | an individual | 21 Housewares | Pending | 2023 |
| Dacefloy 2175000 · TMA1226142 | an individual | 28 Toys | Registered | 2024 |
| DIGIFLOW 0703971 · TMA451415 | CHEMLINE FLOW CONTROL LIMITED | 9 Electronics | Registered | 1995 |
| DECOFLOR 0653576 · TMA451675 | F. VON LANGSDORFF LICENSING LIMITED | 6 Metal19 Building | Registered | 1995 |
| DigiFlow 2371122 | GEA Farm Technologies GmbH | 7 Machines9 Electronics | Pending | 2024 |
| Dasbayla 2233661 · TMA1259692 | Xiamen Langchi Technology Co. Ltd. | 25 Clothing | Registered | 2024 |
| digivelop 2132647 · TMA1194827 | Digivelop Media Ltd. | 9 Electronics42 Science | Registered | 2023 |
| DAKAFUL 2121729 · TMA1197708 | Jiangmen City Allred Lighting Technology Co. Ltd. | 11 Lighting | Registered | 2023 |
| DCBEL 2102836 · TMA1164935 | dcbel Inc. | 9 Electronics35 Advertising37 Construction | Registered | 2023 |
| DISCIPLINE 2102083 · TMA1280483 | 9289-0011 Québec Inc. | 21 Housewares32 Beer | Registered | 2025 |
| dessiball 2036287 · TMA1158111 | an individual | 7 Machines11 Lighting | Registered | 2022 |
| DISPLAYLINK 2026536 · TMA1283841 · design | Synaptics Incorporated | 9 Electronics42 Science | Registered | 2025 |
| DECIBEL 2024451 · TMA1153983 | Decibel Partners, LLC | 35 Advertising36 Finance | Registered | 2022 |
| DAISYFIELD 2018897 · TMA1156130 | KOHLER CO. | 11 Lighting | Registered | 2022 |
| dasbulk 1952197 · TMA1133537 | an individual | 9 Electronics | Registered | 2022 |
| DCBEL 1944427 · TMA1161889 | dcbel Inc. | 9 Electronics35 Advertising | Registered | 2023 |
| Doggieville 1876497 · TMA1084646 | Le Centre Canine Doggieville Inc. | 16 Paper21 Housewares24 Textiles+1 | Registered | 2020 |
| DECKPLUS 1869024 · TMA1041707 | Behr Process LLC | 1 Chemicals2 Paints | Registered | 2019 |
| DECIBEL 1851017 · TMA1082227 | Decibel Therapeutics, Inc. | 5 Pharmaceuticals | Registered | 2020 |
| DISPLAYCAST 1825875 · TMA1053078 | Ag Leader Technology, Inc. | 9 Electronics | Registered | 2019 |
| DogPlay 1819918 · TMA1006400 | DND DogPlay Inc. | 43 Restaurants44 Medical45 Legal | Registered | 2018 |
| DESOFILL 1809433 · TMA988907 | PRC-DeSoto International, Inc. | 2 Paints | Registered | 2018 |
| DISABILITYGUARD 1804658 · TMA1030550 | CDSPI | 36 Finance | Registered | 2019 |
| Discipline2fer 1774918 · TMA971327 | an individual | 36 Finance41 Education42 Science+1 | Registered | 2017 |
| DISCIPLR 1768921 · TMA1014512 | Disciplr, LLC | 9 Electronics41 Education42 Science | Registered | 2019 |