| Genies & Herbes | Montréal | Landscaping |
| Geordie Theatre | Saint-Henri | Tout Arts et divertissement |
| GLyPharma Therapeutique Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Go Care Health | Montréal | Health Services |
| Groupe Carreaux Céragrès Inc. (siège social) - Ceragres Tile Group Inc. (head office) | Montréal | Cold-Storage Warehouses |
| Groupe Herjavec | Montréal | Information Technologies (IT) |
| Groupe Informatique Chemical | Montréal | Life Sciences and Health Technologies (LSHT) |
| Guichet Desjardins - Centre de services automatisés L'Heureux | Beloeil | Automated Teller Manufacturers & Wholesalers |
| Guichet Desjardins - École des hautes études commerciales (HEC) | Montréal | Automated Teller Manufacturers & Wholesalers |
| GUZZO Recherche Nano Corporation | Du Coteau | Life Sciences and Health Technologies (LSHT) |
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| H Heroux | Québec | h |
| H L'Hebreux | Lévis | h |
| H. J. Heinz Company of Canada Ltd. | Anjou | Tout Entreprises et services |
| Harmoni Health Center | Pointe-Claire | Fitness Gyms |
| Hassouna El Hedda | Québec | el |
| Hm Hebert | Lachine | hm |
| Homa Therapie | Montréal | Alternative Health |
| Hopital Ste Therese | Lasalle | Health Services |
| Hot Water Heater Repair | Montréal | Plumbing |
| HYDRO-QUEBEC/Urgence 24-heures | Montréal | Blue Pages |
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| HypeLife Headphones | Montréal | Audiovisual Equipment & Supplies |
| Hypnotherapeute Haute Performance Sportive | Montréal | Alternative Health |
| HÉROUX-DEVTEK, Division Trains (Hochelaga Aérospatiale Inc.) | Laval | Aerospace |
| Hémisphere gauche | Petite-Patrie | Tout Bars et restaurants |
| Iam Aesthetician | Laval | Health and Beauty |
| ibreathe.ca | Montréal | Alternative Health |
| ICON Recherche clinique | Montréal | Life Sciences and Health Technologies (LSHT) |
| ILIAN ASSOCIATION HERMES | Montréal | Blue Pages |
| ILIOS C.P.E. Hellénique | Roxboro | Education / Career |
| Ilkos Therapeutics Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
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| Importations Herbasanté inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Importations Herbasanté inc. (les) | Ste-Croix | Life Sciences and Health Technologies (LSHT) |
| Innova Medic - Injections Botox, PRP, Agents de comblement - Lachenaie | Terrebonne | Health and Beauty |
| Innovaderm Recherches Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| InnoVie Health | Floor | Life Sciences and Health Technologies (LSHT) |
| Institut De Recherche | Longueuil | Alternative Health |
| Institut de Recherche Biologique Yves Ponroy Canada Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| inVentiv Health clinique | Québec | Tout Entreprises et services |
| inVentiv Health Clinique | Montréal | Analytical & Testing Laboratories |
| inVentiv Health clinique inc | Montréal | Analytical & Testing Laboratories |
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| InVentiv Health Clinique Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| J W Plumbing & Heating Inc | Montréal | Plumbing |
| Jeff Heinrich | Montréal | Tout Médias montréalais |
| Jenthera Therapeutics Inc. | Banting | Life Sciences and Health Technologies (LSHT) |
| Jm Helene Grenier | Québec | jm |
| Jocelyne Chagnon Ostéopathe | Greenfield Park | Alternative Health |
| Journey To The Real You | Montréal | Alternative Health |
| JSS Recherche Médicale | Montréal | Life Sciences and Health Technologies (LSHT) |
| JSS Recherche Médicale Inc.* | West | Life Sciences and Health Technologies (LSHT) |
| JULES & HENRI COUVREURS LTEE | Edmonton | Roofing |
