| College Pro Painters | Montréal | Painters |
| Colorisme | Montréal | Painters |
| Coloritech | Anjou | Painters |
| ColorMax | Montréal | Painters |
| Compagnie Peint'Ex Enr | Montréal | Painters |
| Construction Carolina Ltée | Montréal | Painters |
| Construction Gaïa inc. | Montréal | Painters |
| Constructions Embec | Montréal | Painters |
| Consultant Théberge Peinture | Montréal | Painters |
| Cool Painting | Saint-Léonard | Painters |
Publicité (Desktop) Publicité (Mobile) |
| Corbin Therapeutics Inc. | Square | Life Sciences and Health Technologies (LSHT) |
| Corbin thérapeuthique | Montréal | Life Sciences and Health Technologies (LSHT) |
| Corporation Pharmaceutique Nymox | Montréal | Life Sciences and Health Technologies (LSHT) |
| Cosmas Therapeutics Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Coup de Main | Montréal | Painters |
| Cours de Peinture Lasalle | Montréal | Painters |
| Courtier Immobilier Agréé Robert Labre | Québec | Real Estate Offices, Courtier immobilier |
| COUVREUR ROBERT RIVET | Vancouver | Roofing |
| CPL Peinture | Lavaltrie | Painters |
| Creo Peinture | Montréal | Painters |
Publicité (Desktop) Publicité (Mobile) |
| Crescita Therapeutics Inc. | Renaud | Life Sciences and Health Technologies (LSHT) |
| Cuisine V.I.P. | Montréal | Painters |
| Cura Therapeutics | Regent | Life Sciences and Health Technologies (LSHT) |
| Cycle & Sports Robert | Lasalle | Tout Commerces au détail |
| Cyclenium Pharma | Montréal | Life Sciences and Health Technologies (LSHT) |
| Cyclenium Pharma Inc. | Banting | Life Sciences and Health Technologies (LSHT) |
| Cécile Comblen Peintre - Visual Artist | Montréal | Painters |
| D'Errico Arturo | Montréal | Painters |
| DalCor Pharmaceuticals Canada Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Dan Beasy Painting | Montréal | Painters |
Publicité (Desktop) Publicité (Mobile) |
| Daniel Desrochers le Peintre | Montréal | Painters |
| Daniel Robert Terrassement (entrepreneur général) | Pointe-Aux-Trembles | Landscaping |
| Dany Lemay | Montréal | Painters |
| DD & G Inc | Montréal | Painters |
| Deco-Desing Extreme | Laval | Painters |
| Delarosbil Décor | Anjou | Painters |
| Denis Brault | Montréal | Painters |
| Desparois Pierre | Montréal | Painters |
| DG Peintre | Montréal | Painters |
| DiaTech Oncology®, developers of CorrectChemo® | Montréal | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| Diazon Pharmaceuticals (Therillia) | Montréal | Life Sciences and Health Technologies (LSHT) |
| Diazon Pharmaceuticals Inc. | Idem Therillia | Life Sciences and Health Technologies (LSHT) |
| Dr Robert Koby | Montréal | Health Services |
| Dr Robert Perron | Laval | Medical Clinics |
| DropGenie | Floor | Life Sciences and Health Technologies (LSHT) |
| Du Pinceau au Plumeau | Montréal | Painters |
| Durand Robert Dr | Montréal | Dentists |
| Dutremble Peinture | Montréal | Painters |
| Décapage Et Peinture Du Nord | Montréal | Painters |
| Déco Design Peinture Jean-Louis David | Montréal | Painters |
