| Clinique Médicale Argyle | Not Profit, Medical Clinics | — |
| Clinique Médico-Esthétique | Not Profit, Medical Clinics | facebook.com |
| Clinique Pierre Larose | Health Services | facebook.com |
| Clinique St lambert | Not Profit, Medical Clinics | centresdedenturologie.com |
| Cloudcade Canad Inc. | Information Technologies (IT) | cloudcade.com |
| Club De Golf St-Lambert | Clubs | golfstlambert.com |
| Club Jockey Du Québec | Clubs | — |
| Club Monsieur Coiffure Inc | Barbers, Men's Hairdressers & Barber Shops | clubmonsieurcoiffure.com |
| Clément Del Vecchio CPA S.E.N.C.R.L. - Comptable professionnel agréé | Accounting Services | clementdelvecchio.com |
| Cni | Beds | facebook.com |
| Coiffure Du Carrefour | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Coiffure Exception Milou | Beauty & Fitness, Hairdressers & Beauty Salons | coiffurelouisrobert.com |
| Coles The Book People Brunswick Sq | Book Stores | — |
| Collège Durocher Saint-Lambert | Tout Enseignement et savoir | cdsl.qc.ca |
| Comité Sectoriel de la Métallurgie | Associations | — |
| Concept Dentaire Rive-Sud | Dentists | conceptdentaire.com |
| Conservatoire de Musique de la Montérégie | Art Schools | conservatoiremonteregie.org |
| Cortex Distribution L'Oréal Professionnel | Beauty Salon Equipment & Supplies | cortexdist.com |
| COUNTRY CLUB | Clubs | — |
| Country Club Of Montreal Inc | Clubs | countryclubmontreal.com |
| Cours de Peinture Mixarts | Art Schools | mixarts.ca |
| Cpd Charles-Lemoyne | Banks | — |
| CPE Mouillepied | Childcare Services | — |
| Cycle Et Sports Castonguay Ltée | Bicycle Stores | — |
| D De Sa | sa | — |
| Dandy Lion's Studio | Artists | facebook.com |
| Daphné Brassard Ostéopathie | Alternative Health | facebook.com |
| De Soi À L'Emploi | Career Counselling | soi-emploi.qc.ca |
| Delarosbil Chaput CPA | Accounting Services | delarosbilchaput.ca |
| Dermapure - Saint-Lambert | Beauty & Health Spas | — |
| Des Groseilliers Pierre C A | Accounting Services | — |
| Des Groseilliers Pierre C A Inc | Accounting Services | — |
| Distribution Gaf | Associations | distributionsgaf.com |
| Distributions Giroux, Christian | Shopping Mall | facebook.com |
| District Cuisine | Cabinet Makers | districtcuisine.ca |
| Djam | Beauty & Health Spas | facebook.com |
| Dlr Services Comptables Inc. | Accounting Services | — |
| Docteur Salam Sakkal | Dentists | — |
| Dominique et Compagnie | Tout Entreprises et services | dominiqueetcompagnie.com |
| Dorlottine | Boutiques | facebook.com |
| Dr Claude Martel - Chirurgien Dentiste | Dentists | conceptdentaire.com |
| Dr Denis Abergel | Tout Entreprises et services | bouche.ca |
| Dr François Leclerc | Dentists | conceptdentaire.com |
| Dr François Leclerc - Chirurgien Dentiste | Dentists | conceptdentaire.com |
| Dr Joseph Serhan - Chirurgien Dentiste | Dentists | facebook.com |
| Dr Tomasz Kosun - Chirurgien Dentiste | Dentists | conceptdentaire.com |
| Dre Audrey Dubois Orthodontiste Inc | Dentists | facebook.com |
| Dre Truong Caroline Chirurgien Dentiste | Dentists | conceptdentaire.com |
| Départ De Golf St-Lambert | Clubs | golfstlambert.com |
| E Bu | bu | — |
