| Tapis Téhéran | Carpet Cleaning Equipment & Supplies | — |
| Tasty&Stylish Catering | Caterers | facebook.com |
| Taxi Laval Rive-Nord (Taxilaval.Org) | Airport Transportation Service | — |
| TD Canada Trust | Finances / Banking, Tout Entreprises et services | tdcanadatrust.com |
| Team Tube Ltd. | Tout Entreprises et services | teamtube.com |
| Techcraft Style | Bedding & Linens | facebook.com |
| TechnoComu | Computer & Technology Assistance Programs | facebook.com |
| Technofou Inc | Shopping Mall | facebook.com |
| Technologie Ceci | Associations | facebook.com |
| Technologies ecofix | Life Sciences and Health Technologies (LSHT) | ecofixe.com |
| Technologies Multi Connex Inc | Computer Room Setup, Protection, Equipment & Maintenance | multiconnex.com |
| Technopluie | Life Sciences and Health Technologies (LSHT) | technopluieinc.com |
| TechnoRem | Life Sciences and Health Technologies (LSHT) | technorem.com |
| Tekstar International Inc | Computer Accessories & Supplies | tekstarinternational.com |
| Tekstar Internationale Inc | Computer Accessories & Supplies | — |
| TELLIDES, George | Home Decoration & Maintenance, Real Estate Agencies / Agents | tellides.com |
| TELLIDES, Soula | Home Decoration & Maintenance, Real Estate Agencies / Agents | tellides.com |
| Tendance Coiffure | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Tendance Créole | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Tennis 13 | Arenas, Stadiums & Athletic Fields | tennis13.com |
| Terrassement Clean Look | Landscaping | — |
| The 3 Brewers | Brewers | facebook.com |
| The Art of Octavianism | Art Galleries, Dealers & Consultants | — |
| The Brick | Furniture Stores | www1.thebrick.com |
| Therapeutique New World Inc. | Life Sciences and Health Technologies (LSHT) | nwl.net |
| Thermoplast | Tout Entreprises et services | thermoplast.com |
| Thibault Robert | Bankruptcy Lawyers | — |
| Thryv Therapeutics Inc | Medical Clinics | — |
| Tibbon House Inc | Arts & Crafts Stores | — |
| Tiger-Vac International Inc | Central Vacuum Systems | tiger-vac.ca |
| Tim Hortons | Bagels, Cafes Terraces, Coffee Stores | locations.timhortons.ca |
| Tim Hortons 440 | Coffee Stores | locations.timhortons.ca |
| Tina Goulas Hairstylist | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Tire From The Nortth | Tire Shop | — |
| TLA Architectes (Laval) | Architects | — |
| TMR Construction | Building Contractors | — |
| Toiles Performances | Art Materials & Supplies | toilesperformances.ca |
| Toiture DND | Roofing | toiturednd.com |
| Toitures Duvernay Inc | Roofing | toituresduvernay.com |
| Toitures et Gouttières QZ | Roofing | gouttieresqz.ca |
| Toitures Mkvc Prestige | Roofing | facebook.com |
| Toitures Tôle-Bec Inc | Roofing | — |
| Tomo Concorde | Medical Clinics | tomoconcorde.com |
| Top Classique Vetements Sport | Fitness Gyms | — |
| Top Remix - DJ Serge Paré | Tout Entreprises et services | topremix.com |
| Touchette Pneus et Mécanique | Tire Shop | pneustouchette.ca |
| Towing Laval Ouest | Boat Towing | towinglavalouest.com |
| Towing Service Laval | Boat Towing | towingservicelaval.com |
| Towing Ste Dorothée | Boat Towing | towing-st-dorothee.business.site |
| Tqc Equipment Inc | Answering Machines & Equipment | facebook.com |
