| Isolation Algon | Tout Entreprises et services | algon2000.com |
| Isolation Algon (2000) Inc | Asbestos Removal & Abatement | algon2000.com |
| Isolation Eclair Inc | Cold & Heat Insulation Contractors | — |
| Isolation Mongrain | Cold & Heat Insulation Contractors | — |
| Isolation Mécanique C B Ltée | Cold & Heat Insulation Contractors | garderieeducativechomedey.com |
| Itech Autobody | Auto Body Shop | — |
| J Couture | Couture, COUTURE | — |
| J Couture | Couture, COUTURE | — |
| J Couture | Couture, COUTURE | — |
| J&C Kitchen | Home Improvement | facebook.com |
| J2M Technologies | Computer Cabling, Installation & Service | j2mtechnologies.com |
| Jacinthe Couture | Couture, COUTURE | — |
| Jacques Jgari?py | py | — |
| Jacques Tanis | Appraisers | facebook.com |
| JARDINS URGEL BOURGIE LAVAL | Cemeteries, Services | — |
| Jaytrain | Fitness Gyms | jaytrain.ca |
| JC Perreault | Furniture Stores | jcperreault.com |
| Jd Poirier | jd | — |
| Jds Enr | Auto Part Manufacturers & Wholesalers | gazeco.ca |
| Jean Coutu (Affiliated Pharmacies) | Pharmacy | — |
| Jean Coutu Jacques Bourget & Nick Campanelli (Affiliated Pharmacy) | Pharmacy | jeancoutu.com |
| JEAN COUTU Pharmacie B. Latreille & J. Thiffault | Health | — |
| Jean Coutu Véronique Paquet | Pharmacy | — |
| JEAN COUTU, E. KARAINDROS | Health | — |
| JEAN-LOUIS Coiffure | Beauty & Fitness | — |
| JEAN-MICHEL Entretien Electro-Ménager | Home Decoration & Maintenance | — |
| Jeet Kune Do Laval | Tout Enseignement et savoir | jeetkunedolaval.blogspot.com |
| Jennifer Mailloux | Appraisers | — |
| JGL Plans & Solutions Inc | Architectural Technologists | jglplanssolutions.com |
| JIM PATTISON INDUSTRIES LTD | Car Leasing | locationlacolle.com |
| JIMMY’S REG’D | Construction / Renovation | — |
| JN Renovation | Kitchen Cabinets | — |
| Joanie Bergeron Commissaire à l’Assermentation | Commissioners for Oaths | — |
| Jobin Lave Auto Enr | Car Detailing | facebook.com |
| Johanne Boisvert | Shopping Mall | — |
| Johanne Bouchard Esthétique | Beauty Institutes | facebook.com |
| Johanne Carriere Enr | Shopping Mall | — |
| Jolicoeur Savard Assurance Inc | Car Insurance | jsassurance.ca |
| Joseph Gill-Lussier | Fitness Gyms | inspirationpilates.ca |
| José Et Georges Inc | Commercial Kitchen Equipment | — |
| Jules Construction Et Renovation Inc | Bathroom Renovations | julesconstruction.ca |
| Julie Coiffure Pour Hommes | Beauty & Fitness, Black Hair Salons | juliecoiffurepourhommes.com |
| Julie Couture | Couture, COUTURE | — |
| Julie Deschenes | Career Counselling | — |
| Julie Lebeau | Tout Enseignement et savoir | jlebeau.com |
| Jungle Adventure | Amusement Places | jungleaventure.com |
| Jw Finigan | jw | — |
| JYSK Laval - Méga Centre Notre-Dame | Furniture Stores | jysk.ca |
| JYSK Laval - Quartier Laval | Furniture Stores | jysk.ca |
| Jysk Linen & Furniture Inc | Furniture Stores | jysk.ca |
