| DOCAL 2331635 | 3075109 Canada Inc. | 7 Machines11 Lighting37 Construction+1 | Pending | 2024 |
| DOSOL 2265235 · design | Zirui (Shenzhen) Medical Technology Co. Ltd. | 10 Medical | Pending | 2023 |
| DOCILA 2158000 · TMA1208910 | Hong Kong Herebuy Trading Co. Limited | 25 Clothing | Registered | 2023 |
| DOCCLE 1740124 · TMA966654 · design | Doccle.Up, Naamloze vennootschap (a limited company organised and existing under the laws of Belgium) | 35 Advertising36 Finance38 Telecommunications+1 | Registered | 2017 |
| DOCCLE 1740122 · TMA966650 | Doccle.Up, Naamloze vennootschap (a limited company organised and existing under the laws of Belgium) | 35 Advertising36 Finance38 Telecommunications+1 | Registered | 2017 |
| DUOCEL 0539147 · TMA312531 | an individual | 3 Cosmetics | Registered | 1986 |
| DUOCAL 0503041 · TMA297708 | SHS INTERNATIONAL LTD | 5 Pharmaceuticals | Registered | 1984 |
| DUOSOL 0451081 · TMA257737 | SWIMC LLC | 2 Paints | Registered | 1981 |
| DAICOL 0240050 · TMA108285 | an individual | 1 Chemicals | Registered | 1957 |
| DECOOL 2291799 · design | Owner not listed | 28 Toys | Pending | 2023 |
| DOWCAL 2213951 | The Dow Chemical Company | 1 Chemicals | Pending | 2022 |
| DCL 1916867 · TMA1118417 · design | an individual | 9 Electronics12 Vehicles25 Clothing+4 | Registered | 2022 |
| DCL 1902643 · TMA1029444 | DCL, INC. | 12 Vehicles | Registered | 2019 |
| DCL 1861055 · TMA1069711 | DCL, INC. | 6 Metal | Registered | 2020 |
| DICAL+ 1824243 · TMA1006254 | Aliphos Belgium SA | 1 Chemicals5 Pharmaceuticals | Registered | 2018 |
| DCL 1745742 · TMA969324 | Dermatologic Cosmetic Laboratories Ltd. | 3 Cosmetics5 Pharmaceuticals | Registered | 2017 |
| DCL 1716501 · TMA1053558 | DCL, INC. | 7 Machines9 Electronics40 Treatment+1 | Registered | 2019 |
| DCL 1573503 · TMA898709 | Sysmex Corporation | 1 Chemicals5 Pharmaceuticals | Registered | 2015 |
| DOGAL 1360533 · TMA778382 | an individual | 6 Metal | Registered | 2010 |
| DCCL 1334149 · TMA765675 | AlumaSafway Inc. | 6 Metal16 Paper19 Building+3 | Registered | 2010 |
| DCL 0870220 · TMA506000 · design | DCL INTERNATIONAL INC. | 4 Oils7 Machines9 Electronics+2 | Registered | 1998 |
| DCL 0769539 · TMA465094 · design | Sysmex Corporation | 1 Chemicals5 Pharmaceuticals | Registered | 1996 |
| DECAL 0766322 · TMA495375 | Diebold Incorporated (an Ohio corporation) | 9 Electronics36 Finance37 Construction | Registered | 1998 |
| DYCAL 0640683 · TMA370810 | DENTSPLY SIRONA Inc. | 5 Pharmaceuticals | Registered | 1990 |
| DUCAL 0390920 · TMA217638 | Owner not shown | 29 Meat32 Beer | Registered | 1976 |