| DouglaX 2012381 · TMA1133970 | DOUGLAX CAPITAL GROUP LTD. | 29 Meat30 Coffee32 Beer+1 | Registered | 2022 |
| DOUGLAS 1969050 · TMA1139243 | GOODMORNING.COM INC. | 20 Furniture24 Textiles35 Advertising | Registered | 2022 |
| DOUGLAS 1942527 · TMA1144208 · design | GOODMORNING.COM INC. | 20 Furniture24 Textiles35 Advertising | Registered | 2022 |
| DOUGLAS 1896929 · TMA1136978 · design | Parfümerie Douglas GmbH & Co. KG | 3 Cosmetics4 Oils5 Pharmaceuticals+16 | Registered | 2022 |
| douglas 1811318 · TMA999844 | GOODMORNING.COM INC. | 20 Furniture | Registered | 2018 |
| DOXILOG 1727965 · TMA988355 | an individual | 9 Electronics38 Telecommunications42 Science | Registered | 2018 |
| DOUGLAS 1360604 · TMA720859 | Douglas Company, Inc. (Corporation organized under the laws of the State of New Hampshire) | 28 Toys | Registered | 2008 |
| DOUGLAS 1360433 · TMA754412 | REITMANS (CANADA) LIMITED/REITMANS (CANADA) LIMITEE | 25 Clothing | Registered | 2009 |
| Douglas 1286042 · TMA747527 | Parfümerie Douglas GmbH & Co. KG | 35 Advertising | Registered | 2009 |
| DOUGLAS 1280123 · TMA678411 · design | Page One Publishing Inc. | 16 Paper | Registered | 2006 |
| DOUGLAS 1187870 · TMA632961 | Parfümerie Douglas GmbH & Co. KG | 41 Education44 Medical | Registered | 2005 |
| DOUGLAS 1080532 · TMA629069 · design | Parfümerie Douglas GmbH & Co. KG | 3 Cosmetics8 Hand9 Electronics+3 | Registered | 2004 |
| DOUGLAS 0717167 · TMA425766 | THE GOODYEAR TIRE & RUBBER COMPANY (AN OHIO CORPORATION) | 12 Vehicles | Registered | 1994 |
| DEGLAS 0542035 · TMA313849 | Röhm GmbH | 19 Building20 Furniture21 Housewares | Registered | 1986 |
| DOUGLAS 0424971 · TMA236715 | Douglas Lighting Controls Inc. | 9 Electronics11 Lighting17 Rubber | Registered | 1979 |
| DOUGLAS 0258194 · TMA123117 | The Boeing Company | 12 Vehicles | Registered | 1961 |
| "DOUGLAS" 0216462 · UCA43844 | THE SCOTT FETZER COMPANY | 7 Machines | Registered | 1952 |
| DOUGLAS 2355704 | Corn Products Development, Inc. | 1 Chemicals | Pending | 2024 |
| DESOLAS 2333956 | Desolas Holdings LLC | 33 Wine | Pending | 2024 |
| DESLOC 2332024 | Zhejiang Desman Intelligent Technology Co. LTD. | 6 Metal | Pending | 2024 |
| DESLOC 2332022 | Zhejiang Desman Intelligent Technology Co. LTD. | 9 Electronics | Pending | 2024 |
| DOSEOLOGY 2009449 | Doseology Sciences Inc. | 1 Chemicals5 Pharmaceuticals9 Electronics+4 | Pending | 2020 |
| dyslexperts 2259228 · TMA1277862 | an individual | 41 Education | Registered | 2024 |
| DayClocks 2241475 · TMA1264206 | DayTime, LLC dba DayClocks | 14 Jewellery | Registered | 2024 |
| DAYCLOCKS 2241337 · TMA1264205 · design | DayTime, LLC dba DayClocks | 14 Jewellery | Registered | 2024 |