| DEMING 0250838 · TMA127365 | Crane Pumps & Systems PFT Corp. | 7 Machines8 Hand | Registered | 1962 |
| Daomong 2145804 · TMA1238202 | Hefei Oumeijia International Trade Co., Ltd. | 21 Housewares | Registered | 2024 |
| DOMINGO 0911480 | THE MANITOBA LOTTERIES CORPORATION | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1999 |
| DOMINIC 1700602 · TMA971131 | Delta Faucet Company | 11 Lighting | Registered | 2017 |
| DOMINIC 1473110 · TMA784734 · design | 9491-8828 QUÉBEC INC. | 30 Coffee | Registered | 2010 |
| DUNNING 1352987 · TMA737843 | Dunning Holdings LLC | 25 Clothing | Registered | 2009 |
| DOMINUS 1247088 · TMA652963 · design | Dominus Properties Corporation | 36 Finance37 Construction | Registered | 2005 |
| DOMINUS 1007635 · TMA536440 | DOMINUS ESTATE CORPORATION A DELAWARE CORPORATION | 33 Wine | Registered | 2000 |
| DANNONG 2327406 · design | GUANGZHOU SUNZ TRADING LIMITED COMPANY | 30 Coffee32 Beer35 Advertising | Pending | 2024 |
| DANNONG 2291744 · design | GUANGZHOU SUNZ TRADING LIMITED COMPANY | 3 Cosmetics8 Hand9 Electronics+4 | Pending | 2023 |
| DOMINAS 2290670 | TAI GUK PHARM. CO. LTD | 3 Cosmetics | Pending | 2023 |
| DAMANCI 2172257 | UNIHOL, LLC. | 3 Cosmetics | Pending | 2022 |
| DYNAMIG 1959202 | Lincoln Global, Inc. | 9 Electronics | Pending | 2019 |
| DOMINGUEZ 0719972 · TMA456173 · design | an individual | 25 Clothing | Registered | 1996 |
| DEMONIACULT 2249273 · TMA1268653 | Owner not listed | 18 Leather25 Clothing35 Advertising | Registered | 2024 |
| Domhanico 2239219 · TMA1259880 | an individual | 20 Furniture | Registered | 2024 |
| Dinamica 2225491 · TMA1229105 · design | Sage Automotive Interiors, Inc. | 12 Vehicles18 Leather24 Textiles | Registered | 2024 |
| DYNAMICO 2209831 · TMA1228510 | INNOSPEC LIMITED | 1 Chemicals | Registered | 2024 |
| DYNAMESH 2087261 · TMA1146018 | Dynabrade, Inc. | 7 Machines | Registered | 2022 |
| Duonamic 2070699 · TMA1160313 | Duonamic Technology Inc. | 28 Toys | Registered | 2023 |
| DYNAMIC 2068559 · TMA1280232 · design | Owner not shown | 28 Toys | Registered | 2025 |
| DynamicAgenda 2068446 · TMA1182488 | 11992210 Canada Inc. | 42 Science | Registered | 2023 |
| 5 DIMENSIONS 2054844 · TMA1169727 | 2909610 ONTARIO INC. | 44 Medical | Registered | 2023 |
| DYNAMICURE 2051954 · TMA1165669 · design | DynamiCure Biotechnology, LLC | 5 Pharmaceuticals10 Medical42 Science | Registered | 2023 |
| DYNAMSOFT 2049736 · TMA1167961 | Dynamsoft Corporation | 9 Electronics | Registered | 2023 |