| GREEK ORTHODOX COMMUNITY OF LAVAL | Laval | Blue Pages | — |
| Greene Lyon Canada Inc | Laval | Information Technologies (IT) | greenelyon.com |
| Groupe Karaté Sportif | Laval | Tout Enseignement et savoir | karatesportif.com |
| Groupe Lauzon | Laval | Tout Commerces au détail | groupelauzon.com |
| GSF Canada Inc | Laval | Life Sciences and Health Technologies (LSHT) | gsf-canada.com |
| GSM MECHANICAL, George Sheet Metal | Laval | Construction / Renovation | — |
| H Ab | Laval | ab | — |
| H Couture | Laval | Couture, COUTURE | — |
| Haute Coiffure Gina Primiani | Laval | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Heimann Systems Inc. | Laval | Tout Entreprises et services | smithsdetection.com |
| Helie Dr | Laval | dr | — |
| HELLENIC ORTHODOX COMMUNITY OF LAVAL | Laval | Blue Pages | hcm-chm.org |
| Hershey Canada Inc | Laval | Agri-food | hersheycanada.com |
| HOLY CROSS Greek Orthodox Church., LAVAL | Laval | Blue Pages | — |
| Hopital St-Jude de Laval | Laval | Blue Pages, Hospitals | — |
| HOWMET LTÉE (GROUPE ALCOA) | Laval | Aerospace | howmet.com |
| HREBA | Laval | Home Decoration & Maintenance, Real Estate Agencies / Agents | hrebamontreal.com |
| HRYSSI ANYSSIA | Laval | Beauty & Fitness, Estheticians | — |
| Hy Feldhammer | Laval | hy | — |
| Hy Pailakian | Laval | hy | — |
| HÉROUX-DEVTEK, Division Trains (Hochelaga Aérospatiale Inc.) | Laval | Aerospace | herouxdevtek.com |
| ICX RADAR SYSTEMS | Laval | Aerospace | radarsystems.icxt.com |
| ID-3 Technologies inc. | Laval | Tout Informatique et internet | id-3.net |
| IERA MONI AGIAS IRINIS CHRYSOVALANTOU | Laval | Blue Pages | — |
| INFOLUTION INC. | Laval | Aerospace | infolution.ca |
| Informatel Services Informatiques Inc | Laval | Information Technologies (IT) | dtint.com |
| INFOSERV | Laval | Tout Informatique et internet | infoserv.ca |
| INGTECH inc. | Laval | Clean Technologies | ingtech.com |
| Institut Caroline Gagné | Laval | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Institut O Teint | Laval | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| INTEGA Sciences de la Peau inc. (Laboratoire Dr Renaud) | Laval | Life Sciences and Health Technologies (LSHT) | ldrenaud.com |
| INTERNATIONAL THREAD (FILETAGE INTERNATIONAL INC.) | Laval | Aerospace | — |
| Internet Infinity | Laval | Tout Informatique et internet | getinfinity.com |
| Intégration Dolphin | Laval | Information Technologies (IT) | dolphin.fr |
| Invitrozyme Inc. | Laval | Life Sciences and Health Technologies (LSHT) | invitrozyme.com |
| Isolation Algon | Laval | Tout Entreprises et services | algon2000.com |
| J Couture | Laval | Couture, COUTURE | — |
| J Couture | Laval | Couture, COUTURE | — |
| J Couture | Laval | Couture, COUTURE | — |
| Jacinthe Couture | Laval | Couture, COUTURE | — |
| Jacques Jgari?py | Laval | py | — |
| JARDINS URGEL BOURGIE LAVAL | Laval | Cemeteries, Services | — |
| Jd Poirier | Laval | jd | — |
| JEAN COUTU Pharmacie B. Latreille & J. Thiffault | Laval | Health | — |
| JEAN COUTU, E. KARAINDROS | Laval | Health | — |
| JEAN-LOUIS Coiffure | Laval | Beauty & Fitness | — |
| JEAN-MICHEL Entretien Electro-Ménager | Laval | Home Decoration & Maintenance | — |
| Jeet Kune Do Laval | Laval | Tout Enseignement et savoir | jeetkunedolaval.blogspot.com |
| JIMMY’S REG’D | Laval | Construction / Renovation | — |
| Julie Couture | Laval | Couture, COUTURE | — |
