| DURRCA 1981703 · TMA1130228 | 10357693 Canada Inc. | 25 Clothing | Registered | 2022 |
| DERCHI 2318325 · design | Guangdong Deji Excellent Doors and Windows Co. Ltd. | 6 Metal | Pending | 2024 |
| DEROS 2136852 · TMA1205085 | Mirka Ltd | 7 Machines | Registered | 2023 |
| DEERC 1933322 · TMA1214839 · design | an individual | 10 Medical12 Vehicles15 Musical+6 | Registered | 2023 |
| DORC 1736308 · TMA987748 · design | D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. | 5 Pharmaceuticals10 Medical | Registered | 2018 |
| DORC 1736307 · TMA983471 | D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. | 5 Pharmaceuticals10 Medical | Registered | 2017 |
| DRC 1652001 · TMA955110 | Les Produits DRC Inc. | 5 Pharmaceuticals25 Clothing35 Advertising+2 | Registered | 2016 |
| DERIS 1204630 · TMA673843 · design | DERIS PATENTS & TRADEMARKS AGENCY JOINT-STOCK COMPANY, a legal entity | 9 Electronics16 Paper35 Advertising+4 | Registered | 2006 |
| DRC 1048392 · TMA552888 · design | Fruit and Vegetable Dispute Resolution Corporation / La Corporation de Règlements des Différends dans les Fruits et Légumes | 35 Advertising45 Legal | Registered | 2001 |
| DRC 1021163 · TMA564587 · design | Sony Group Corporation | 9 Electronics | Registered | 2002 |
| DORCY 0869221 · TMA524264 | Dorcy International Incorporated | 9 Electronics11 Lighting12 Vehicles+1 | Registered | 2000 |
| DORCO 0760197 · TMA474527 | DORCO CO. LTD. | 8 Hand | Registered | 1997 |
| DARCO 0738447 · TMA432597 | Dreadnought, Inc. (a Delaware corporation) | 15 Musical | Registered | 1994 |
| DARCO 0717092 · TMA417505 | DARCO INTERNATIONAL, INC. A WEST VIRGINIA CORPORATION | 10 Medical | Registered | 1993 |
| DARCO 0396316 · TMA220972 | CABOT NORIT AMERICAS, INC. | 1 Chemicals | Registered | 1977 |
| DARCO 0128234 · TMDA39698 · design | CABOT NORIT AMERICAS, INC. | 1 Chemicals | Registered | 1926 |
| DARCY 2362161 | FixMeStick Technologies Inc. | 9 Electronics42 Science | Pending | 2024 |
| DORSA 2233111 · design | an individual | 3 Cosmetics6 Metal9 Electronics+14 | Pending | 2022 |
| darga 2156082 | Owner not shown | 9 Electronics16 Paper25 Clothing+2 | Pending | 2021 |
| DERRICK 1909330 · TMA1102088 · design | Derrick Corporation | 7 Machines | Registered | 2021 |
| DERRICK 1908108 · TMA1109885 · design | Derrick Corporation | 7 Machines | Registered | 2021 |
| DERUCCI 1887080 · TMA1067552 · design | DE RUCCI BEDDING CO. LTD. | 43 Restaurants | Registered | 2019 |
| DERRICK 1484307 · TMA810264 | Derrick Corporation, a New York Corporation | 7 Machines | Registered | 2011 |
| DERRICK 0438194 · TMA251181 | an individual | 3 Cosmetics | Registered | 1980 |
| DOORES 2314959 · TMA1245709 · design | Owner not listed | 26 Sewing | Registered | 2024 |