| Delco Aviation | Aircraft & Private Jet Charter | delcoaviation.com |
| Delia Coiffure | Beauty & Fitness, Hairdressers & Beauty Salons | coiffuredelia.com |
| Delmare Construction | Home Improvement | facebook.com |
| Demarreur Parebrise Laval | Car Remote Starters | demarreur-parebrise-laval.com |
| Denis Veilleux | Landscaping | — |
| Denise Couture | Couture, COUTURE | — |
| Denise Morin Infirmière en Soins Podologiques | Chiropodists | soinsdespieds.qc.ca |
| Dentalgps | Life Sciences and Health Technologies (LSHT) | dentalgps.com |
| DEP Ongles Et Coiffure | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Deric Vourantonis Comptable Agréé | Accountants | facebook.com |
| Derma Cell Research | Life Sciences and Health Technologies (LSHT) | dermacellresearch.ca |
| Derma Excellence | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Derma Excellence | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Derma Pure | Beauty & Fitness, Hairdressers & Beauty Salons | laserdermapure.com |
| Dermapparence | Health and Beauty | bio.site |
| Dermapure - Clinique Médico-Esthétique | Health and Beauty | facebook.com |
| DEROS, Carol | Home Decoration & Maintenance, Real Estate Agencies / Agents | tellides.com |
| Deschatelets Pierre Appraiser | Appraisers | facebook.com |
| Deschênes & Fils Ltée | Bathroom Accessories | deschenes.ca |
| Design 450 | Beauty & Fitness, Hairdressers & Beauty Salons | gcd450.ca |
| Design Attitude | Home Improvement | facebook.com |
| DesignMedia | Tout Entreprises et services, Tout Informatique et internet | design-media.ca |
| Desjardins - Laval | Caisses Populaires | — |
| Desjardins Consultantes | Air Conditioning Contractors | facebook.com |
| DESMEULES CHRYSLER / DC | Automobiles | desmeules.ca |
| Desormeaux Brouillard & Associé | Bailiffs | — |
| Desormeaux Brouillard Huissiers de justice | Bailiffs | csihuissier.com |
| Desparois Nadia | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Després Laporte | Bakery Equipment, Bakery Supplies | despreslaporte.com |
| Després Laporte Inc | Commercial Kitchen Equipment | despreslaporte.com |
| Dessins Lucan 2013 Inc | Furniture Stores | — |
| Destination Coiffure Enrg | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Diamond Auto Detailing | Car Detailing | facebook.com |
| Diane Couture | Couture, COUTURE | — |
| Diane Ferland Artiste Coiffeuse | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Dib Design | Furniture Stores | facebook.com |
| DIMITRATOS, DINA, LL.L., D.D.N. | Professionals | — |
| Dimitri Houde | Art Schools | nancylepine.com |
| Distri-Bouffe | Coffee Break Services & Supplies | — |
| Distri-Bouffe | Coffee Break Services & Supplies | — |
| Distribution Café Addison | Coffee Machines & Roasting Equipment | — |
| Distribution Café De La Gare | Coffee Machines & Roasting Equipment | facebook.com |
| Distribution Dutech | Air Conditioning Systems & Parts | facebook.com |
| DISTribution MONT ROYAL | Caulking Materials & Equipment | distributionmontroyal.com |
| DISTRIBUTION NORELCO INC | Information Technologies (IT) | distributionnorelco.ca |
| Distributions Zein | Computer Accessories & Supplies | facebook.com |
| Districhem-Eco | Cleaning Services, Cleaning Service | — |
| Dites Oui À La Robe - Robes De Bal Et Soirée Montréal | Bridal Shops | ditesouialarobe.com |
| Diva | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Djsaman | Auditoriums & Halls | facebook.com |
