| DOCUFLOW 1553309 · TMA835661 | Versafile Inc. | 9 Electronics | Registered | 2012 |
| DECOFLOR 0653576 · TMA451675 | F. VON LANGSDORFF LICENSING LIMITED | 6 Metal19 Building | Registered | 1995 |
| Dacefloy 2175000 · TMA1226142 | an individual | 28 Toys | Registered | 2024 |
| DECOFLAM 1050178 · TMA561698 | LEMBEX IMPORT INC. | 8 Hand11 Lighting21 Housewares+1 | Registered | 2002 |
| DECOFLEX 0808516 · TMA482121 | Esselte Corporation | 16 Paper | Registered | 1997 |
| DIGIFLOW 0703971 · TMA451415 | CHEMLINE FLOW CONTROL LIMITED | 9 Electronics | Registered | 1995 |
| DigiFlow 2371122 | GEA Farm Technologies GmbH | 7 Machines9 Electronics | Pending | 2024 |
| DEXFLEX 1260323 · TMA716523 | Söfft Shoe Company, LLC | 25 Clothing | Registered | 2008 |
| DEXFLEX 0587743 · TMA350688 | EQUISTAR CHEMICALS, LP | 1 Chemicals | Registered | 1989 |
| DecoFlake 1425210 · TMA761558 | an individual | 19 Building | Registered | 2010 |
| 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 |