| HORTSMART 1594503 · TMA887445 | Nufarm Agriculture Inc. | 9 Electronics14 Jewellery16 Paper+3 | Registered | 2014 |
| HEARTSMART 1451107 · TMA798525 | Heartsmart Customer Solutions, LLC | 9 Electronics | Registered | 2011 |
| HARDSUIT 1728252 · TMA972880 | Highlander Ocean Engineering Technology Development (HK) Co. Limited | 9 Electronics12 Vehicles37 Construction+1 | Registered | 2017 |
| HEARTHSTONE 2281845 · TMA1269072 | an individual | 11 Lighting | Registered | 2024 |
| HARTOSCOPE 2253579 · TMA1271575 | Hartoscope Craft Limited | 21 Housewares | Registered | 2024 |
| HERETIC 2233483 · TMA1256644 | 7953135 Canada Inc. | 9 Electronics | Registered | 2024 |
| HEARTCUP 2193892 · TMA1219408 | GOLD FLAG LTD. | 25 Clothing | Registered | 2024 |
| Hritok 2176740 · TMA1227128 | an individual | 18 Leather | Registered | 2024 |
| HORTEX 2173480 · TMA892537 · design | Owner not shown | 29 Meat | Registered | 2014 |
| HORTEX 2173479 · TMA892537 · design | Owner not shown | 30 Coffee32 Beer | Registered | 2014 |
| HORTEX 2172487 · TMA495680 | Owner not shown | 29 Meat30 Coffee | Registered | 1998 |
| HORTEX 2172486 · TMA495680 | Owner not shown | 29 Meat32 Beer | Registered | 1998 |
| HairDiction 2112253 · TMA1179392 | an individual | 3 Cosmetics26 Sewing | Registered | 2023 |
| Heartsbloom 2110520 · TMA1179286 | an individual | 9 Electronics41 Education44 Medical | Registered | 2023 |
| HARTS 2101971 · TMA1227755 · design | Focus Media and Marketing Inc. | 34 Tobacco | Registered | 2024 |
| HARTZ 2094400 · TMA1154330 | The Hartz Mountain Corporation | 3 Cosmetics5 Pharmaceuticals16 Paper | Registered | 2022 |
| HEARTSTOPPER 2088877 · TMA1257611 | Netflix Studios, LLC | 41 Education | Registered | 2024 |
| HORTIEXPE 2054675 · TMA1187097 · design | an individual | 9 Electronics11 Lighting | Registered | 2023 |
| HAIRTOX 2022550 · TMA1265029 | 2697845 Ontario Inc. | 3 Cosmetics | Registered | 2024 |
| HARDIEASSURE 2005480 · TMA1281908 | James Hardie Technology Limited | 35 Advertising37 Construction | Registered | 2025 |
| HARDIESPEC 2005477 · TMA1250665 | James Hardie Technology Limited | 9 Electronics42 Science | Registered | 2024 |
| HEARTWISE 2001036 · TMA1255956 | University of Ottawa Heart Institute | 9 Electronics39 Transport41 Education+1 | Registered | 2024 |
| HeartX 1999480 · TMA1118567 | Owner not shown | 9 Electronics | Registered | 2022 |
| HERTZKO 1953598 · TMA1220103 | Just Fur Love, LLC | 8 Hand18 Leather21 Housewares | Registered | 2024 |
| HEARTSET 1943976 · TMA1233091 | SHARMA LEADERSHIP INTERNATIONAL INC. | 9 Electronics16 Paper38 Telecommunications+1 | Registered | 2024 |