| DABBER 2155277 · TMA1209803 · design | Dabber | 9 Electronics | Registered | 2023 |
| DABIR 2168530 · TMA1269750 | Raye's, Inc. dba Sizewise Manufacturing | 9 Electronics10 Medical | Registered | 2024 |
| DABUR 1608371 · TMA925663 · design | DABUR INDIA LIMITED | 32 Beer | Registered | 2016 |
| DABUR 1333690 · TMA941801 · design | DABUR INDIA LIMITED | 3 Cosmetics5 Pharmaceuticals30 Coffee | Registered | 2016 |
| DAPPER 1890540 · TMA1203422 | Dapper Labs Inc. | 9 Electronics25 Clothing35 Advertising+3 | Registered | 2023 |
| DEBEER 1231902 · TMA865150 | RAWLINGS SPORTING GOODS COMPANY, INC. (A DELAWARE CORPORATION) | 9 Electronics18 Leather28 Toys | Registered | 2013 |
| DAPPER 2172048 | Dapper Labs Inc. | 9 Electronics | Pending | 2022 |
| DAPPER 2172047 | Dapper Labs Inc. | 36 Finance | Pending | 2022 |
| DAPPER 2172046 | Dapper Labs Inc. | 42 Science | Pending | 2022 |
| DAPPER 2172045 | Dapper Labs Inc. | 41 Education | Pending | 2022 |
| DAPPER 2172044 | Dapper Labs Inc. | 35 Advertising41 Education | Pending | 2022 |
| DABBIERI 2109273 · TMA1167144 | CCA Global Partners, Inc. | 19 Building27 Carpets | Registered | 2023 |
| DYPER 2052220 · TMA1127536 · design | Dyper Inc. | 3 Cosmetics5 Pharmaceuticals35 Advertising+1 | Registered | 2022 |
| DUBUR 1834613 · TMA995941 | Andrew Quentin Legault and 1284666 Alberta Inc. a joint venture | 9 Electronics25 Clothing35 Advertising+5 | Registered | 2018 |
| DIVER 1741427 · TMA949265 | an individual | 6 Metal7 Machines8 Hand+2 | Registered | 2016 |
| DBR 1678268 · TMA959494 | ViiV Healthcare UK Limited | 5 Pharmaceuticals16 Paper42 Science+1 | Registered | 2017 |
| DBR 1550593 · TMA837879 · design | SUPERY ABS PIPE FITTING CO. LTD | 6 Metal11 Lighting17 Rubber+2 | Registered | 2012 |
| DBAR 1549622 · TMA843773 | The Dinex Group, LLC | 43 Restaurants | Registered | 2013 |
| Dover 1491024 · TMA855538 | LIXIL Corporation | 11 Lighting | Registered | 2013 |
| DIVER 1421059 · TMA760095 | Kalia inc. | 11 Lighting | Registered | 2010 |
| DOVER 1149681 · TMA692176 | DELAWARE CAPITAL FORMATION, INC. (A DELAWARE CORPORATION) | 6 Metal7 Machines9 Electronics+4 | Registered | 2007 |
| DIVER 1137605 · TMA602875 | an individual | 9 Electronics | Registered | 2004 |
| DOVER 1107841 · TMA600935 | ALLAN BLOCK CORPORATION | 19 Building | Registered | 2004 |
| DOVER 0991699 · NFLD1699 · design | HUDSON MOTOR CAR COMPANY (A MICHIGAN CORPORATION) | 12 Vehicles | Registered | 1929 |
| DOVER 0483815 · TMA273446 | Cardinal Health 529, LLC | 10 Medical | Registered | 1982 |