| HARDWIIRE 2291204 | HARDWIIRE INC. | 9 Electronics | Pending | 2023 |
| HARDWARE 1580347 · TMA854152 | Blackbird Interactive Inc. | 9 Electronics41 Education | Registered | 2013 |
| HARDWARE 0715672 · TMA429946 | Owner not shown | 16 Paper | Registered | 1994 |
| HARDWARE 2127461 | LOCKERROOM MARKETING LTD. | 1 Chemicals3 Cosmetics | Pending | 2021 |
| HEARTWIRE 1041463 · TMA552243 | WEBMD LLC a Delaware limited liability company | 42 Science | Registered | 2001 |
| HARDWAIR 1220664 · TMA678530 · design | AIRWAIR INTERNATIONAL LIMITED | 25 Clothing | Registered | 2006 |
| HRDRIVE 1844554 · TMA1099424 | HRDOWNLOADS INC. | 9 Electronics35 Advertising36 Finance+4 | Registered | 2021 |
| HARDWEAR 1001951 · TMA557825 | an individual | 3 Cosmetics | Registered | 2002 |
| HARDURA 2344860 · design | Ningbo Huige Metal Products Co. Ltd | 11 Lighting20 Furniture21 Housewares | Pending | 2024 |
| HARDR 2160689 | an individual | 9 Electronics | Pending | 2022 |
| HAIRDIRECT 1887613 · TMA1075722 | HairDirect, Inc. | 26 Sewing40 Treatment | Registered | 2020 |
| HARDWAREWALL 1456699 · TMA809572 | The Boeing Company | 9 Electronics35 Advertising37 Construction+1 | Registered | 2011 |
| Heartdriven 1972429 · TMA1120750 | an individual | 25 Clothing | Registered | 2022 |
| HEROTHORN 2241617 · TMA1261582 | Shanghai Shangjiao Industrial Co. Ltd | 25 Clothing | Registered | 2024 |
| HAIRDREAMS 2167485 · TMA1242478 | Hairdreams Haarhandels GmbH | 3 Cosmetics8 Hand10 Medical+3 | Registered | 2024 |
| HAIRDRENALINE 2158940 · TMA1213234 | Unilever Canada Inc. | 3 Cosmetics | Registered | 2023 |
| HYRTRYP 2109905 · TMA1158401 | HYCLONE LABORATORIES,LLC | 1 Chemicals | Registered | 2022 |
| HEARTWARMING 1955138 · TMA1211500 | Harlequin Enterprises ULC | 9 Electronics16 Paper41 Education | Registered | 2023 |
| HAIRDORABLES 1880055 · TMA1055514 | Just Play, LLC | 28 Toys | Registered | 2019 |
| HARDIEREWARDS 1873436 · TMA1044270 | James Hardie Technology Limited | 35 Advertising | Registered | 2019 |
| HARDIEREWARDS 1873435 · TMA1044277 · design | James Hardie Technology Limited | 35 Advertising | Registered | 2019 |
| HARDRON 1842628 · TMA1013851 · design | SANGSIN BRAKE CO. LTD. | 7 Machines12 Vehicles | Registered | 2019 |
| HORTURION 1840825 · TMA1051552 | BLV Licht - und Vakuumtechnik GmbH | 9 Electronics11 Lighting | Registered | 2019 |
| HARTURIS 1793042 · TMA1039161 | Merck Sharp & Dohme Corp. | 5 Pharmaceuticals | Registered | 2019 |
| HARTREQA 1704735 · TMA1060050 | Merck Sharp & Dohme Corp. | 5 Pharmaceuticals | Registered | 2019 |