| DWIO 1763565 · TMA974345 | Dental Wings Inc. | 10 Medical | Registered | 2017 |
| DYWI 1624736 · TMA908447 | Dywidag-Systems International GMBH | 1 Chemicals2 Paints6 Metal+11 | Registered | 2015 |
| DEWI 1399799 · TMA782737 · design | DEWI GmbH Deutsches Windenergie-Institut | 35 Advertising36 Finance37 Construction+3 | Registered | 2010 |
| DW 2167451 · TMA1198193 · design | Divertissement Dreamwave inc. | 16 Paper | Registered | 2023 |
| DWE 2165381 · TMA1284342 · design | Drum Workshop, Inc. | 9 Electronics15 Musical | Registered | 2025 |
| dwe 2121065 · TMA1207438 | Drum Workshop, Inc. | 9 Electronics15 Musical | Registered | 2023 |
| DOI 2087329 · TMA1194273 | TOPDON USA INC | 9 Electronics | Registered | 2023 |
| DW 2034894 · TMA1106599 · design | an individual | 9 Electronics41 Education | Registered | 2021 |
| DHI 2023894 · TMA1223505 | Owner not shown | 9 Electronics41 Education42 Science | Registered | 2024 |
| D4I 2006376 · TMA1208112 · design | IEEE Industry Standards and Technology Organization, Inc. | 9 Electronics11 Lighting38 Telecommunications+2 | Registered | 2023 |
| D4i 2004056 · TMA1208102 | IEEE Industry Standards and Technology Organization, Inc. | 9 Electronics11 Lighting38 Telecommunications+2 | Registered | 2023 |
| DHI 1892378 · TMA1119000 | Ontario Dairy Herd Improvement Corporation | 35 Advertising40 Treatment42 Science+1 | Registered | 2022 |
| DDI 1665814 · TMA963569 | DDI Alliance AKA Data Documentation Initiative (Unincorporated Association, United States) | 42 Science | Registered | 2017 |
| DW 1639516 · TMA888933 · design | Owner not shown | 16 Paper36 Finance38 Telecommunications+1 | Registered | 2014 |
| DEI 1612491 · TMA872735 · design | Distinctive Engineering Inc. | 35 Advertising37 Construction40 Treatment+1 | Registered | 2014 |
| DDI 1516472 · TMA820079 · design | DEVELOPMENT DIMENSIONS INTERNATIONAL, INC. | 35 Advertising41 Education | Registered | 2012 |
| DW² 1467053 · TMA782613 | DEETH WILLIAMS WALL LLP | 45 Legal | Registered | 2010 |
| DWW 1467052 · TMA782614 | DEETH WILLIAMS WALL LLP | 45 Legal | Registered | 2010 |
| DW² 1467051 · TMA782658 · design | DEETH WILLIAMS WALL LLP | 45 Legal | Registered | 2010 |
| DI 1406034 · TMA780286 | Disclosure Insight, Inc. | 9 Electronics16 Paper35 Advertising+1 | Registered | 2010 |
| DW 1372183 · TMA729249 · design | Drum Workshop, Inc. | 15 Musical | Registered | 2008 |
| DWT 1309537 · TMA743957 · design | Douglas Technologies Group, Inc. | 6 Metal8 Hand9 Electronics+3 | Registered | 2009 |
| DWA 1309268 · TMA705348 | DWA GmbH & Co. KG | 11 Lighting | Registered | 2008 |
| DWT 1167640 · TMA653992 · design | an individual | 7 Machines8 Hand9 Electronics+1 | Registered | 2005 |
| DI 1068797 · TMA602913 | Mark' Andy, Inc. and Mark Andy UK Ltd. | 7 Machines | Registered | 2004 |