| Calfeutrage Rive-Nord inc. | 8284-6627-10 | Laval | Active |
| Camille Grenier & fils inc. | 2390-6902-86 | Laval | Active |
| CAN AZUR Construction inc. | 5873-7198-01 | Laval | Active |
| Canador Construction inc. | 5599-0808-01 | Laval | Active |
| Canalisation Nord Américaine 2012 Ltée | 5655-4330-01 | Laval | Active |
| Candussi inc. | 8348-3214-39 | Laval | Active |
| Canvent Ltée | 5842-9515-01 | Laval | Active |
| CAPO_Surface inc. | 5844-4928-01 | Laval | Active |
| Carobene Rénovation inc. | 5853-0916-01 | Laval | Active |
| Carrelage Bellini Signature inc. | 5840-3189-01 | Laval | Active |
| Carrelage Casco inc. | 8265-7750-14 | Laval | Active |
| Carrelage Ceraluxe Inc | 5759-6058-01 | Laval | Active |
| Carrelage Classique inc. | 5878-5742-01 | Laval | Active |
| Carrelage Jesse International inc. | 8105-0437-09 | Laval | Active |
| Carrelage St-Laurent inc. | 8332-3196-28 | Laval | Active |
| Carrelage Xpress Inc. | 5752-7525-01 | Laval | Active |
| Carrosserie Élite Plus inc. | 5713-1799-01 | Laval | Active |
| Cat Électrique Inc. | 5718-7346-01 | Laval | Active |
| Catherine Messier Designer & Finition inc. | 5828-0322-01 | Laval | Active |
| CB Fenexpert inc. | 5633-2174-01 | Laval | Active |
| CBINNOV inc. | 5866-9979-01 | Laval | Active |
| Cebolin Céramique inc. | 5833-3626-01 | Laval | Active |
| Celux Rénovation inc. | 5878-5536-01 | Laval | Active |
| CEMI électrique inc. | 8336-2475-41 | Laval | Active |
| CENTRE D'ALUMINIUM LAVAL INC. | 5601-7601-01 | Laval | Active |
| Centre de services scolaire de Laval | 8229-7169-56 | Laval | Active |
| Centre du Plancher P.M. Inc. | 8310-7888-12 | Laval | Active |
| CENTRE INTÉGRÉ DE SANTÉ ET DE SERVICES SOCIAUX DE LAVAL | 5727-9234-01 | Laval | Active |
| Centre Multi-Services Vac-Tronic Inc | 5655-6848-01 | Laval | Active |
| Centurions Security Solutions Corp. | 5816-2017-01 | Laval | Active |
| Céracor Inc. | 8313-9345-48 | Laval | Active |
| Céramik .17 inc. | 5789-9163-01 | Laval | Active |
| Ceramique A. Pilot & Fils Ltée | 1904-5616-99 | Laval | Active |
| Céramique Azak inc. | 5748-7274-01 | Laval | Active |
| Céramique Bo-T inc. | 5823-7157-01 | Laval | Active |
| Céramique CARJHO inc. | 5869-7848-01 | Laval | Active |
| Céramique Cèrbere inc. | 5854-0378-01 | Laval | Active |
| Céramique Dynamique Inc. | 5776-1975-01 | Laval | Active |
| Céramique Moderna inc. | 5783-2651-01 | Laval | Active |
| Céramique Paradis inc. | 5847-2341-01 | Laval | Active |
| Céramique RRT inc. | 5705-6038-01 | Laval | Active |
| Céramique S.K. inc. | 5688-3580-01 | Laval | Active |
| Céramique Vilem inc. | 5809-8435-01 | Laval | Active |
| Céramiques Naro inc. | 5680-9684-01 | Laval | Active |
| CGI Environnement inc. | 5763-5658-01 | Laval | Active |
| Chadli Inc. | 5855-9477-01 | Laval | Active |
| Cham électrique inc. | 8110-7872-10 | Laval | Active |
| Charbonneau entrepreneur general inc | 5591-7496-01 | Laval | Active |
| Charles Vincent électrique inc. | 8329-5006-48 | Laval | Active |
| Charpente Atlas inc. | 5789-0576-01 | Laval | Active |