| DESCH 1365910 · TMA811778 · design | Desch Antriebstechnik GmbH & Co. KG | 6 Metal7 Machines12 Vehicles+4 | Registered | 2011 |
| DESCH 0542157 · TMA316684 | Desch Antriebstechnik GmbH & Co. KG | 7 Machines25 Clothing | Registered | 1986 |
| Dioche 2126190 · TMA1189714 | Shenzhen Yibai Network Technology Co. Ltd. | 3 Cosmetics | Registered | 2023 |
| DECO 2271624 · TMA1266078 | Owner not listed | 11 Lighting | Registered | 2024 |
| DTOCS 2270941 · TMA1223946 | Owner not listed | 8 Hand21 Housewares35 Advertising | Registered | 2024 |
| DEKCO 2159247 · TMA1219205 · design | GLAZERO INTERNATIONAL INC | 9 Electronics | Registered | 2024 |
| DECA 2144076 · TMA1280563 · design | Distributive Education Clubs of America, Inc. | 9 Electronics16 Paper35 Advertising+1 | Registered | 2025 |
| DECA 2144075 · TMA1280562 | Distributive Education Clubs of America, Inc. | 9 Electronics16 Paper35 Advertising+1 | Registered | 2025 |
| DOCK 2141456 · TMA1188679 | "Dr. Martens" International Trading GmbH; "Dr. Maertens" Marketing GmbH | 25 Clothing | Registered | 2023 |
| DEOS 2136851 · TMA1205084 | Mirka Ltd | 7 Machines | Registered | 2023 |
| DOC 2125386 · TMA1231046 | "Dr. Martens" International Trading GmbH; "Dr. Maertens" Marketing GmbH | 25 Clothing | Registered | 2024 |
| DEUCE 2012511 · TMA1188071 | Deuce Brand Inc. | 18 Leather25 Clothing | Registered | 2023 |
| DEUCE 2012510 · TMA1188070 · design | Deuce Brand Inc. | 18 Leather25 Clothing | Registered | 2023 |
| DEUCE 1986032 · TMA1249327 | NewAgco Inc. | 1 Chemicals | Registered | 2024 |
| DECA 1843612 · TMA1012063 | ROC Capital Group Inc. | 21 Housewares25 Clothing | Registered | 2019 |
| DOSH 1827746 · TMA1101342 | DOSH Holdings, Inc. | 9 Electronics35 Advertising36 Finance+3 | Registered | 2021 |
| DEC 1819303 · TMA1031158 · design | HOYA CORPORATION | 10 Medical | Registered | 2019 |
| DECO 1818357 · TMA1038924 · design | G-Mode Corporation | 9 Electronics25 Clothing28 Toys+1 | Registered | 2019 |
| DECA 1782906 · TMA970814 | LOBLAWS INC. | 33 Wine | Registered | 2017 |
| DECA 1781130 · TMA971007 | GS Beauty Group Inc. | 3 Cosmetics | Registered | 2017 |
| DEOS 1741638 · TMA1041135 | an individual | 9 Electronics11 Lighting42 Science | Registered | 2019 |
| DEUCE 1719046 · TMA950153 | an individual | 8 Hand | Registered | 2016 |
| DECO 1620743 · TMA882055 | Platinum Naturals Ltd. | 5 Pharmaceuticals | Registered | 2014 |
| DOC 1610268 · TMA926622 · design | The Canadian Association of Optometrists | 6 Metal9 Electronics14 Jewellery+8 | Registered | 2016 |
| DECCO 1583584 · TMA910241 | Owner not shown | 1 Chemicals5 Pharmaceuticals | Registered | 2015 |