| Carrefour Laval - Store Directory | Mall Store Directories | redflagdeals.com |
| Cartebateau.com | Tout Arts et divertissement, Tout Enseignement et savoir, Tout Entreprises et services | cartebateau.com |
| CBRE Limited | Appraisers, Real Estate Offices, Courtier immobilier | cbre.ca |
| Cc Zz | cc | — |
| Centre dentaire Boulevard Galeries d’Anjou | Dentists | 123dentist.com |
| Centre dentaire de Haute Technologie du Quebec | Dentists | 123dentist.com |
| Centre dentaire La Cité | Dentists | 123dentist.com |
| Centre dentaire Lapointe – Montréal-Bélanger | Dentists | 123dentist.com |
| Centre dentaire Lapointe – Montréal-René-Lévesque | Dentists | 123dentist.com |
| Centre dentaire Lapointe – Montréal-Sherbrooke Est | Dentists | 123dentist.com |
| Centre dentaire Tesolin & Partenaires | Dentists | 123dentist.com |
| Centres Hypothécaires Dominion Summum | Real Estate Offices, Courtier immobilier | — |
| Century 21 Premier Choix | Real Estate Offices, Courtier immobilier | century21.ca |
| Century 21 Premier Choix | Real Estate Offices, Courtier immobilier | facebook.com |
| CGSI | Tout Informatique et internet | cgsi.qc.ca |
| Ch Campeau | ch | — |
| Ch Co | cq | — |
| Ch Desharnais | ch | — |
| Ch Dumont | ch | — |
| Ch-Ed Belanger | zd | — |
| Chambre Immobilière De Québec | Real Estate Offices, Courtier immobilier | facebook.com |
| Champagne Lamontagne Agence Immobilière | Real Estate Offices, Courtier immobilier | champagnelamontagne.com |
| Champlain Regional College - St.Law... | Tout Enseignement et savoir | slc.qc.ca |
| Chantale Bouchard Real Estate Broker | Real Estate Offices, Courtier immobilier | — |
| Chapeau les bois! | Tout Commerces au détail | chapeaulesbois.com |
| Charpentes Montmorency | Tout Entreprises et services | structuresdebois.com |
| Chef Frankie | Tout Entreprises et services | cheffrankie.ca |
| Chi Yung Li | lz | — |
| Christian Dumais | Real Estate Offices, Courtier immobilier | facebook.com |
| Christian Redmond-Kannon - Monark Agence Immobil ière Inc. | Real Estate Offices, Courtier immobilier | — |
| Christie Innomed | Life Sciences and Health Technologies (LSHT) | christieinnomed.com |
| Christine Arsenault Courtier Immobilier Résidentiel | Real Estate Offices, Courtier immobilier | remax-quebec.com |
| Chronometriq | Life Sciences and Health Technologies (LSHT) | chronometriq.ca |
| ChrysaLabs | Information Technologies (IT) | chrysalabs.com |
| Ci Landry | ci | — |
| Ci Le | ci | — |
| Cl Boivin | cl | — |
| Cl Jo | jo | — |
| Claude Le May | le | — |
| Clinique Dentaire Antoine Sabeh | Dentists | 123dentist.com |
| Clinique FOCUS | Tout Entreprises et services | cliniquefocus.com |
| Club Mustang de Québec | Tout Arts et divertissement | clubmustang.qc.ca |
| Club Tissus | Tout Commerces au détail | clubtissus.com |
| Co Gagne | cq | — |
| Cobalt Properties | Real Estate Offices, Courtier immobilier | — |
| CogniSolve | Life Sciences and Health Technologies (LSHT) | — |
| Colliers , Québec City | Real Estate Offices, Courtier immobilier | collierscanada.com |
| Collineo | Information Technologies (IT) | collineo.net |
| Collision N.C. | Auto Body Shop | — |
| Communautique | Startup Ecosystem, Tout Informatique et internet | communautique.quebec |
