| DTSEARCH 1006407 · TMA535265 | DT SOFTWARE, INC. | 9 Electronics | Registered | 2000 |
| DOCKERS 2208680 · TMA1241617 | Levi Strauss & Co. | 3 Cosmetics | Registered | 2024 |
| DOCKERS 0888843 · TMA531907 · design | LEVI STRAUSS NOVA SCOTIA ULC | 14 Jewellery16 Paper18 Leather+5 | Registered | 2000 |
| DOCKERS 0638742 · TMA382325 | LEVI STRAUSS NOVA SCOTIA ULC | 9 Electronics14 Jewellery16 Paper+6 | Registered | 1991 |
| DocuWorks 2189122 · TMA1278897 | FUJIFILM Business Innovation Kabushiki Kaisha (FUJIFILM Business Innovation Corp.) | 9 Electronics42 Science | Registered | 2024 |
| DECREASE 2151062 · TMA1256183 · design | Brolli Group Limited | 3 Cosmetics | Registered | 2024 |
| 6° 6 DEGREES 2044684 · TMA1204707 · design | 11753649 Canada Inc. dba "6 Degrees Holdings" | 36 Finance | Registered | 2023 |
| DASROQ 2042859 · TMA1146861 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2022 |
| DESROQ 2042858 · TMA1146860 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2022 |
| DUSROQ 2042857 · TMA1146859 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2022 |
| 37 DEGREES 2029952 · TMA1143622 · design | 37 Degrees Fashion Trading Ltd | 9 Electronics14 Jewellery18 Leather+1 | Registered | 2022 |
| 37 Degrees 2014649 · TMA1135615 | 37 Degrees Fashion Trading Ltd | 9 Electronics14 Jewellery18 Leather+1 | Registered | 2022 |
| DOGROOK 2011140 · TMA1156000 | DAVAON LIMITED | 9 Electronics | Registered | 2022 |
| decorstar 1976096 · TMA1134577 | Shenzhen Sangshen E-commerce Co. Ltd. | 11 Lighting | Registered | 2022 |
| 4DEGREES 1950181 · TMA1125219 | VANTAGE DATA CENTERS CANADA, LIMITED PARTNERSHIP | 35 Advertising36 Finance42 Science | Registered | 2022 |
| DESERRES 1928706 · TMA1123365 · design | Omer DeSerres Inc. | 1 Chemicals2 Paints8 Hand+16 | Registered | 2022 |
| 32° DEGREES 1923883 · TMA1100981 · design | D.P.I. Imports, Inc. | 25 Clothing | Registered | 2021 |
| DEKKORSCAPE 1900713 · TMA1089688 | ALLIANCE DESIGNER PRODUCTS INC./PRODUITS DESIGNER ALLIANCE INC. | 19 Building | Registered | 2020 |
| 360° DEGREES 1898406 · TMA1113821 | Sea to Summit Pty Ltd | 6 Metal11 Lighting18 Leather+5 | Registered | 2021 |
| DACERZ 1889167 · TMA1085915 | PFIZER INC. | 5 Pharmaceuticals | Registered | 2020 |
| DXRACER 1864196 · TMA1104877 · design | DXRACER TECHNOLOGY WUXI CO. LTD | 7 Machines9 Electronics12 Vehicles+5 | Registered | 2021 |
| DXRACER 1864195 · TMA1104876 | DXRACER TECHNOLOGY WUXI CO. LTD | 7 Machines9 Electronics12 Vehicles+5 | Registered | 2021 |
| DACRESS 1861878 · TMA1047496 | PFIZER INC. | 5 Pharmaceuticals | Registered | 2019 |
| DECORASAFE 1830281 · TMA1011545 | MAXXMAR INC. | 20 Furniture | Registered | 2018 |
| DECCOREX 1822191 · TMA1079013 · design | an individual | 6 Metal10 Medical14 Jewellery+6 | Registered | 2020 |