| DELITRA 2041453 · TMA1151629 | an individual | 9 Electronics42 Science | Registered | 2022 |
| DELITRACK 1451896 · TMA790202 | an individual | 35 Advertising | Registered | 2011 |
| DALDURI 2286303 · TMA1283513 | an individual | 5 Pharmaceuticals | Registered | 2025 |
| DILLIDUR 2204888 · TMA1225509 · design | an individual | 6 Metal | Registered | 2024 |
| DELTARAY 2059239 · TMA1181379 | DELTARAY | 9 Electronics42 Science | Registered | 2023 |
| DELATERRE 2005741 · TMA1266326 | From the Earth, Inc. | 43 Restaurants | Registered | 2024 |
| DUALTRAC 1944145 · TMA1162930 | Ag Leader Technology, Inc. | 9 Electronics12 Vehicles | Registered | 2023 |
| DeltaROM 1898807 · TMA1213697 | MatOrtho Limited | 10 Medical42 Science | Registered | 2023 |
| DALDURI 1817795 · TMA1040352 | an individual | 5 Pharmaceuticals | Registered | 2019 |
| DEALTRANSFER 1728639 · TMA938787 | Trader Corporation | 36 Finance | Registered | 2016 |
| DUALTHERM 1700165 · TMA1000676 | ALD Vacuum Technologies GmbH | 6 Metal7 Machines8 Hand+3 | Registered | 2018 |
| DELTARES 1659390 · TMA941180 | an individual | 9 Electronics35 Advertising37 Construction+3 | Registered | 2016 |
| DELTAIR 1604651 · TMA897815 | Avon Protection Systems, Inc. | 9 Electronics | Registered | 2015 |
| DELTAIR 1604650 · TMA897814 · design | Avon Protection Systems, Inc. | 9 Electronics | Registered | 2015 |
| DOLDER 1542968 · TMA845871 | an individual | 10 Medical | Registered | 2013 |
| DELATORI 1513573 · TMA827795 · design | Z Luxe Group Inc. | 14 Jewellery | Registered | 2012 |
| DELATORI 1513569 · TMA827794 | Z Luxe Group Inc. | 14 Jewellery | Registered | 2012 |
| DIALYTRAN 1453006 · TMA795743 · design | Royal Victoria Kidney Fund of the McGill University Health Centre | 35 Advertising44 Medical | Registered | 2011 |
| DELTARADAR 1443728 · TMA829151 | Ryan Engineering Limited | 42 Science | Registered | 2012 |
| DELTRANS 1347455 · TMA711278 · design | DELMAR INTERNATIONAL INC. | 39 Transport | Registered | 2008 |
| DELETER 1317291 · TMA739486 | Deleter Inc. | 16 Paper20 Furniture | Registered | 2009 |
| DELTERA 1283039 · TMA685864 · design | TRIDEL CORPORATION | 35 Advertising37 Construction42 Science | Registered | 2007 |
| DELTERA 1282736 · TMA681958 | TRIDEL CORPORATION | 35 Advertising37 Construction42 Science | Registered | 2007 |
| DALTER 1241981 · TMA720120 | an individual | 29 Meat30 Coffee | Registered | 2008 |
| DELTRAN 0756367 · TMA451859 | UTAH MEDICAL PRODUCTS, INC. A CORPORATION OF UTAH | 10 Medical | Registered | 1995 |