| HARDBOR 0761521 · TMA444205 | HIGH STRENGTH PLATES & PROFILES INC. | 6 Metal | Registered | 1995 |
| HARDIEBLADE 1728337 · TMA943868 · design | James Hardie Technology Limited | 7 Machines8 Hand35 Advertising | Registered | 2016 |
| HARDIEBLADE 1343506 · TMA779140 | James Hardie Technology Limited | 7 Machines8 Hand35 Advertising | Registered | 2010 |
| HARDBALL 2166559 · TMA1219876 | Church & Dwight Co. Inc. | 31 Fresh | Registered | 2024 |
| HARDIBRON 2128072 · TMA1219736 | an individual | 7 Machines | Registered | 2024 |
| HARDIEFAST 1983002 · TMA1281809 | James Hardie Technology Limited | 16 Paper37 Construction41 Education | Registered | 2025 |
| HARDIBRON 1976626 · TMA1090362 | an individual | 6 Metal | Registered | 2020 |
| HARDBANK 1885879 · TMA1145108 | Titan Investment Limited | 9 Electronics35 Advertising36 Finance+4 | Registered | 2022 |
| HARTFORD 1708178 · TMA934713 | Hartford-Jackson, LLC | 33 Wine | Registered | 2016 |
| HARTFORD 1705973 · TMA955405 · design | SHE HONG INDUSTRIAL CO. LTD. a legal entity | 7 Machines8 Hand | Registered | 2016 |
| HARDBODY 1028987 · TMA567693 | CALIFORNIA INNOVATIONS INC. | 21 Housewares | Registered | 2002 |
| HARDBACK 0878578 · TMA515194 | Jaguar Land Rover Limited | 12 Vehicles27 Carpets30 Coffee | Registered | 1999 |
| HARTFORD 0720507 · TMA419945 | HARTFORD FIRE INSURANCE COMPANY | 36 Finance | Registered | 1993 |
| HARDBODY 2304014 | Hardbody World Entertainment, LLC | 18 Leather25 Clothing28 Toys+1 | Pending | 2024 |
| HARDIEPAINT 1729697 · TMA1037056 · design | James Hardie Technology Limited | 2 Paints19 Building | Registered | 2019 |
| HARDIEPAINT 1728812 · TMA1037064 | James Hardie Technology Limited | 2 Paints19 Building | Registered | 2019 |
| HARDIEPLANK 1343509 · TMA776857 | James Hardie Technology Limited | 19 Building35 Advertising | Registered | 2010 |
| HARDIEPANEL 1343502 · TMA778883 | James Hardie Technology Limited | 19 Building35 Advertising | Registered | 2010 |
| HARDFIN 2238350 · TMA1255414 | Hardfin, Inc. | 35 Advertising42 Science | Registered | 2024 |
| HardBB 2212567 · TMA1244237 | an individual | 10 Medical | Registered | 2024 |
| HEARTFULNESS 2202970 · TMA1238918 | Sahaj Marg Spirituality Foundation, Inc. | 41 Education | Registered | 2024 |
| HIERTAOP 2196929 · TMA1237322 | Heze Haojie Construction Labor Service Co., Ltd. | 28 Toys | Registered | 2024 |
| HEARTFELT 2175471 · TMA1172937 | PetSmart Home Office LLC | 25 Clothing | Registered | 2023 |
| HEARTFELT 2175470 · TMA1172936 | PetSmart Home Office LLC | 18 Leather | Registered | 2023 |
| HEARTBREAKERS 2173604 · TMA1178318 | PetSmart Home Office LLC | 31 Fresh | Registered | 2023 |