| HETTEC 2201946 · TMA1280807 | HETTEC-components GmbH | 12 Vehicles | Registered | 2025 |
| HITEC 0607308 · TMA407007 | Afton Chemical Corporation | 4 Oils | Registered | 1993 |
| HEWTECH 0694619 · TMA417582 · design | HIRAKAWA HEWTECH CORP. | 9 Electronics17 Rubber | Registered | 1993 |
| HOTTEC 1703018 · TMA984212 | Dentec Safety Specialists Inc. | 9 Electronics11 Lighting | Registered | 2017 |
| HITIC 1586428 · TMA911190 · design | Jereh Energy Services Corporation | 37 Construction | Registered | 2015 |
| HITEX 0992866 · NFLD2866 | THE MORGAN CRUCIBLE COMPANY plc | 9 Electronics10 Medical | Registered | 1947 |
| HYTEC 0865157 · TMA503436 · design | Kohler Canada Co./Compagnie Kohler Canada | 6 Metal9 Electronics11 Lighting+1 | Registered | 1998 |
| HITECH 0654146 · TMA391225 | EAST PENN MANUFACTURING CO. | 2 Paints3 Cosmetics7 Machines+3 | Registered | 1991 |
| HITEK 0522802 · TMA307092 | Global Total Office (an Ontario limited partnership) | 20 Furniture | Registered | 1985 |
| HEATEX 0476755 · TMA327133 | Nexans Canada Inc. | 10 Medical | Registered | 1987 |
| HYTEC 0434933 · TMA240587 | Kohler Canada Co./Compagnie Kohler Canada | 11 Lighting24 Textiles | Registered | 1980 |
| HYTEC 0359259 · TMA194318 | Hydraulic Technologies USA LLC (Delaware limited liability company) | 7 Machines | Registered | 1973 |
| HETECH 2286944 | Yichun Xiongya Electronic Commerce Co. Ltd. | 9 Electronics | Pending | 2023 |
| HEITOK 2249705 · design | Shenzhen Xuyuan Technology Co. Ltd. | 28 Toys | Pending | 2023 |
| HITECK 2071246 | an individual | 10 Medical | Pending | 2020 |
| HEATTECH 1676672 · TMA1031829 | FAST RETAILING CO. LTD. | 20 Furniture24 Textiles35 Advertising | Registered | 2019 |
| HEATTECH 2308035 | FAST RETAILING CO. LTD. | 25 Clothing | Pending | 2023 |
| Heittis 2124303 · TMA1220409 | Zhoukou Selaginella Trading Co. Ltd. | 6 Metal | Registered | 2024 |
| HETTICH 1580878 · TMA866195 · design | HETTICH MARKETING-UND VERTRIEBS-GMBH & CO. KG | 6 Metal20 Furniture | Registered | 2013 |
| HETTICH 1529618 · TMA928595 | ANDREAS HETTICH GMBH & CO. KG | 8 Hand9 Electronics10 Medical+3 | Registered | 2016 |
| Hettich 1373349 · TMA754960 | HETTICH MARKETING-UND VERTRIEBS-GMBH & CO. KG | 6 Metal20 Furniture21 Housewares | Registered | 2009 |
| HAYTECH 2290270 · design | an individual | 9 Electronics | Pending | 2023 |
| HYTEK 2160601 · TMA1261124 | HYTEK International Ltd. | 9 Electronics | Registered | 2024 |
| HTC 1985781 · TMA1105963 | CONTINENTAL REIFEN DEUTSCHLAND GMBH | 12 Vehicles | Registered | 2021 |
| HITCH 1904839 · TMA1098183 | ServiceNow, Inc. | 9 Electronics42 Science | Registered | 2021 |