| Gendron Alain | Accountants | voyagesgendron.com |
| Gendron Communication | Tout Entreprises et services | gendroncommunication.com |
| Generac | Generators | generac.com |
| Genesis Intégration | Information Technologies (IT) | genint.com |
| Genia Photonics Inc. | Life Sciences and Health Technologies (LSHT) | geniaphotonics.com |
| Genny-Tech Inc | Generators | — |
| Genpak Inc. | Tout Entreprises et services | genpak.com |
| Genrep Ltd | Generators | genrep.com |
| Geokam Painting | Painters | — |
| Geroquip Inc. | Tout Entreprises et services | geroquip.com |
| Gertrude Couture | Couture, COUTURE | — |
| GESTION DE PROPRIÉTÉ INTELLECTUELLE IRON MOUNTAIN INC | Information Technologies (IT) | ironmountain.com |
| Gestion JB construction Inc. | Roofing | — |
| Gestion Termico Inc | Bus Stations & Ticket Agencies | — |
| Gestions Immobilieres Anna Inc | Apartments | — |
| Gestions Immobilières Anna Inc | Apartments | — |
| Get FIT with Maria | Fitness Gyms | getfitwithmaria.com |
| Get U Functional | Physiotherapy | facebook.com |
| GIGGLES LAVAL - Party / Balloons / Balloon Delivery - Wedding Supplies / Jouets - Costumes | Balloons | shop.giggles.ca |
| Gilbert Couture | Couture, COUTURE | — |
| GIMMO-NET | Cleaning Services, Cleaning Service | gimmo-net.com |
| Ginette Couture | Couture, COUTURE | — |
| Giraco Assurances et Services Financiers | Car Insurance | giraco.ca |
| Glacial Réfrigération Inc | Commercial Refrigeration Sales & Services | glacialrefrigeration.com |
| GlaxoSmithKline Canada Inc. Bureau daffaires du Québec (BAQ) | Life Sciences and Health Technologies (LSHT) | gsk.ca |
| Global Laser Technologie Inc | Computer Accessories & Supplies | facebook.com |
| Glory Global Solutions Canada Inc | Information Technologies (IT) | gloryglobalsolutions.com |
| Glutino | Agri-food, Tout Entreprises et services | glutino.com |
| GMP Inc | Auto Body Shop | — |
| Gms A-Z Home Solutions | Furniture Stores | facebook.com |
| Go pneus Laval Certifié Auto Service | Car Brake Service | certifieautoservice.ca |
| Gobi Catering | Caterers | facebook.com |
| Gohier Mirabel Inc. | Tout Entreprises et services | gohier-mirabel.com |
| Gold's Gym Laval | Fitness Gyms | — |
| Goud$Hop Distribution - Can | Cans | facebook.com |
| Granit Dépôt Plus Laval | Ceramic Tile Dealers | granitdepotplus.com |
| GRANITE LACROIX Inc. | Monuments, Services | granitelacroix.com |
| Gravure Industrielle Lepage Inc. | Tout Entreprises et services | gravures.org |
| Gravure Renaud | Calendars | gravurerenaud.com |
| GREEK ORTHODOX COMMUNITY OF LAVAL | Blue Pages | — |
| Greene Lyon Canada Inc | Information Technologies (IT) | greenelyon.com |
| Groulx Cynthia Dre | Chiropractors | chiroka.ca |
| Groupe Eco Conseil | Air Conditioning Contractors | facebook.com |
| Groupe Extenzia | Landscaping | extenzia.ca |
| Groupe Gestion Mauril | Collectibles | — |
| Groupe Impérial | Cleaning Services, Cleaning Service | facebook.com |
| Groupe ISAC | Automation Systems & Equipment | facebook.com |
| Groupe Jaco Inc | Building Repair & Restoration | — |
| Groupe Karaté Sportif | Tout Enseignement et savoir | karatesportif.com |
| Groupe Lauzon | Tout Commerces au détail | groupelauzon.com |
