| DIAMONDTOP 1819526 · TMA1065724 | WestRock Shared Services, LLC, a legal entity | 16 Paper | Registered | 2019 |
| DIAMONTEC 2028359 · TMA1185827 · design | Taicang Tec International Trading Co. Ltd. | 12 Vehicles | Registered | 2023 |
| DIAMONTECH 1995762 · TMA1114125 | an individual | 9 Electronics10 Medical42 Science | Registered | 2021 |
| DIAMONDGRIP 1745282 · TMA966072 | Diamond Performance Ltd | 7 Machines | Registered | 2017 |
| DIAMONDDECK 1709938 · TMA953083 | CertainTeed Corporation | 19 Building | Registered | 2016 |
| DIAMONDCORP 2361530 | Diamond Corp. | 35 Advertising36 Finance37 Construction | Pending | 2024 |
| DIAMONDCLEAR 1878101 · TMA1080004 | BALTIMORE AIRCOIL COMPANY, INC. | 11 Lighting | Registered | 2020 |
| DIAMONDTOUCH 1824873 · TMA997986 | Q.E.P. CO. INC. | 19 Building27 Carpets | Registered | 2018 |
| DIAMONDWEAVE 1547547 · TMA879116 | Ribbon Webbing Corporation | 22 Ropes40 Treatment | Registered | 2014 |
| DIAMONDQUEST 1536493 · TMA831620 | Centimark International Corporation | 3 Cosmetics7 Machines37 Construction | Registered | 2012 |
| DIAMONDWEAVE 1523447 · TMA821551 | The Procter & Gamble Company | 16 Paper | Registered | 2012 |
| DIAMONDCLEAR 1298629 · TMA684503 | Seiko Group Kabushiki Kaisha t/a Seiko Group Corporation | 9 Electronics | Registered | 2007 |
| DIAMONDTRACK 2294768 · design | Signature Systems Group, LLC | 12 Vehicles19 Building27 Carpets | Pending | 2023 |
| DIAMONDTRACK 2294767 | Signature Systems Group, LLC | 19 Building | Pending | 2023 |
| DiamondSTONE 2135832 | DiamondSTONE - Laboratoire de matériaux Inc. | 1 Chemicals2 Paints | Pending | 2021 |
| DIAMONDDEVIL 2095891 · design | an individual | 34 Tobacco | Pending | 2021 |
| DIAMONDBACK 2247647 · TMA1265954 | Owner not listed | 37 Construction42 Science44 Medical | Registered | 2024 |
| DIAMONDBACK 2188288 · TMA1215625 | US SYNTHETIC CORPORATION | 7 Machines | Registered | 2023 |
| DIAMONDBACK 2122189 · TMA1168997 | Diamondback Tool Co. Inc. | 8 Hand | Registered | 2023 |
| DIAMONDRS 2097316 · TMA1153225 | IGT | 28 Toys | Registered | 2022 |
| DIAMOND 2077364 · TMA1220274 | an individual | 9 Electronics10 Medical | Registered | 2024 |
| DIAMOND2 2075875 · TMA1187179 | ARYAMOND PTE. LIMITED | 14 Jewellery35 Advertising | Registered | 2023 |
| DIAMONDGLOW 2028213 · TMA1115933 | Allergan, Inc. | 10 Medical | Registered | 2021 |
| DIAMONDLOCK 1936671 · TMA1147474 | The Dow Chemical Company | 1 Chemicals17 Rubber | Registered | 2022 |
| DiamondPay 1832351 · TMA1066861 | DIAMOND CARD CORPORATION | 36 Finance45 Legal | Registered | 2019 |