| DESCENT 2186372 · TMA1214676 | Arrmaz Products Inc. | 1 Chemicals | Registered | 2023 |
| DESCENT 1521505 · TMA821951 | Canadian Tire Corporation, Limited | 12 Vehicles | Registered | 2012 |
| DESCENTE 1490566 · TMA805795 · design | DESCENTE LTD. | 18 Leather25 Clothing28 Toys | Registered | 2011 |
| DESCENTE 0425415 · TMA325463 · design | DESCENTE LTD. | 14 Jewellery16 Paper18 Leather+2 | Registered | 1987 |
| DESCENTE 1987449 · design | DESCENTE LTD. | 24 Textiles | Pending | 2019 |
| DOCENT 1024394 · TMA557100 | Docent, Inc. | 9 Electronics35 Advertising | Registered | 2002 |
| DESCENDANT 1585648 · TMA877448 | Sony Music Entertainment a partnership legally organized under the laws of Delaware, having as partner(s) SONY MUSIC HOLDINGS INC. AND USCO SUB LLC | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2014 |
| DESCENDANT 2289489 | an individual | 25 Clothing30 Coffee43 Restaurants | Pending | 2023 |
| Dcenti 1811786 · TMA1013916 | WAH HUNG GROUP INC. | 12 Vehicles | Registered | 2019 |
| DYCONT 1328419 · TMA755293 | DyCont Trading Corp. | 24 Textiles | Registered | 2009 |
| DESMET 2278296 | an individual | 7 Machines42 Science | Pending | 2023 |
| DECENTRAL 1676082 · TMA968456 | Decentral Inc. | 9 Electronics16 Paper35 Advertising+6 | Registered | 2017 |
| DESCENDANTS 1657574 · TMA959350 · design | DISNEY ENTERPRISES, INC. (A DELAWARE CORPORATION) | 3 Cosmetics14 Jewellery16 Paper+6 | Registered | 2017 |
| Dsnaduo 2264137 · TMA1284815 | an individual | 6 Metal | Registered | 2025 |
| Dsnaduo 2264136 · TMA1284814 | an individual | 12 Vehicles | Registered | 2025 |
| Dsnaduo 2264135 · TMA1284813 | an individual | 7 Machines | Registered | 2025 |
| DESKMATES 2247845 · TMA1267217 | Deskmates Canada Inc. | 35 Advertising | Registered | 2024 |
| DECONTEX 2209933 · TMA1251044 | an individual | 7 Machines | Registered | 2024 |
| DOGMATIL 2175227 · TMA1194031 | SANOFI | 5 Pharmaceuticals | Registered | 2023 |
| DECONTEX 2167095 · TMA1241119 | an individual | 9 Electronics37 Construction | Registered | 2024 |
| DignityMoves 2150906 · TMA1183241 | an individual | 37 Construction | Registered | 2023 |
| DuoControl 2123986 · TMA1169073 | Owner not shown | 5 Pharmaceuticals | Registered | 2023 |
| DISGENET 2094371 · TMA1210669 · design | Owner not shown | 9 Electronics42 Science | Registered | 2023 |
| DIGNITAS 2083852 · TMA1219639 | Owner not shown | 42 Science44 Medical45 Legal | Registered | 2024 |
| DejaNetworks 2076593 · TMA1280413 | Liberty PlugIns, Inc. | 9 Electronics37 Construction | Registered | 2025 |