| DOLFIN 2194986 · TMA1212635 · design | DOLFIN Academy LLC | 41 Education42 Science | Registered | 2023 |
| DOLFIN 2176077 · TMA1208965 | DOLFIN Academy LLC | 41 Education42 Science | Registered | 2023 |
| DOLFIN 0842356 · TMA513546 | an individual | 30 Coffee | Registered | 1999 |
| Dolofen 2222115 | Medipha Inc | 5 Pharmaceuticals | Pending | 2022 |
| DELFAN 2147747 · TMA1187785 · design | TRADE CORPORATION INTERNATIONAL, S.A. Unipersonal | 1 Chemicals | Registered | 2023 |
| DOLPHIN 2116942 · TMA1205030 · design | an individual | 12 Vehicles28 Toys | Registered | 2023 |
| DOLPHIN 1870999 · TMA1080247 · design | MAYTRONICS LTD. | 7 Machines12 Vehicles | Registered | 2020 |
| DOLFINO 1772567 · TMA975062 | Amélio Éducation inc. | 9 Electronics16 Paper28 Toys+6 | Registered | 2017 |
| DOLPHIN 1601530 · TMA894670 · design | Owner not shown | 22 Ropes37 Construction40 Treatment | Registered | 2015 |
| DOLPHIN 1439423 · TMA775739 | Imex Systems Inc. | 9 Electronics | Registered | 2010 |
| DOLPHIN 1195053 · TMA642714 | MAYTRONICS LTD. | 7 Machines | Registered | 2005 |
| DOLPHIN 0992834 · NFLD2834 · design | J. EVERSHED & SON, LIMITED | 3 Cosmetics | Registered | 1946 |
| DOLPHIN 0829786 · TMA528082 | HAND HELD PRODUCTS, INC. (a Delaware corporation) | 9 Electronics | Registered | 2000 |
| DOLFINO 0720136 · TMA429586 | Aqua-Leisure Recreation, LLC | 9 Electronics28 Toys | Registered | 1994 |
| DOLPHIN 0438961 · TMA243390 | MARINELAND OF CANADA INC. | 35 Advertising | Registered | 1980 |
| DOLPHIN 0346743 · TMA189669 | LIPPER INTERNATIONAL INC. | 1 Chemicals8 Hand9 Electronics+4 | Registered | 1973 |
| DOLPHON 0320209 · TMA166387 | JOHN C. DOLPH COMPANY | 1 Chemicals17 Rubber | Registered | 1969 |
| DOLPHIN 0289186 · TMA143370 | SLOAN VALVE COMPANY | 11 Lighting | Registered | 1966 |
| DOLPHIN 2356024 | Owner not listed | 35 Advertising | Pending | 2024 |
| DOLPHIN 0900305 | Owner not shown | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1984 |
| DOLABANY 1577263 · TMA862895 | 6995764 CANADA INC. | 9 Electronics20 Furniture | Registered | 2013 |
| DEALFIND 1495639 · TMA815331 | DEALFIND.COM INC. | 35 Advertising | Registered | 2012 |
| DOLPHINS 0363282 · TMA256907 · design | MIAMI DOLPHINS, LTD. A FLORIDA LIMITED PARTNERSHIP, COMPRISED OF JOSEPH ROBIE AND SOUTH FLORIDA SPORTS CORPORATION, A FLORIDA CORPORATION, AS GENERAL PARTNERS, AND DONALD F. SCHULLA AS LIMITES PARTNERS, TRADING AS MIAMI DOLPHINS, LTD. | 14 Jewellery16 Paper18 Leather+5 | Registered | 1981 |