| Chocolaterie Maria Belge | Chocolate | facebook.com |
| Chocolats Giacomo (Les) Div. des distributions Mondoux Inc. | Agri-food | chocolatgiacomo.ca |
| Choeur de Laval | Tout Arts et divertissement | choeurdelaval.ca |
| CHOMEDEY NISSAN INC. | Automobiles | chomedeynissan.com |
| CHORUS, DANCING & PIANO LESSONS/Laval Hell. Comm. | Blue Pages | — |
| Christian Thibault & Sophie Dionne | Bakeries | — |
| Christiane Dubé Coiffure unisexe | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Christophe Condello | Toutes les Pages perso | christophecondello.wordpress.com |
| Château Royal Salles Réception et Congrès | Auditoriums & Halls | lechateauroyal.com |
| Châteauneuf, Les | Cemeteries | facebook.com |
| CIAMIL | Startup Ecosystem | mobiliteintelligente.com |
| Cianci et Associes | Chartered Professional Accountants (CPA) | ciancietassocies.com |
| Cils Vous Plaît Lucie | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Cils Xtreme Lashes | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| CIMA | Life Sciences and Health Technologies (LSHT), Tout Entreprises et services | cima.ca |
| Cima Plus | Architectural & Construction Specifications | — |
| Ciment Québec Inc | Cement Dealers | facebook.com |
| Cimetiere de Laval | Cemeteries | cimetierelaval.com |
| Cimsoft | Automation Systems & Equipment | facebook.com |
| Cine-Sieges Demeule Inc | Furniture Stores | facebook.com |
| Ciot Surplus | Ceramic Tile Dealers | ciot.com |
| Cirion Biopharma Recherche Inc. | Life Sciences and Health Technologies (LSHT) | cirion.com |
| Cisss De Laval | CLSC | — |
| Cisss De Laval | Accountants | — |
| Cite de la Sante de Laval | Blue Pages, Hospitals | — |
| Citeflex | Medical Clinics | — |
| CiToxLAB North America | Life Sciences and Health Technologies (LSHT) | citoxlab.com |
| City Paysagiste SENC | Landscaping | citypaysagiste.com |
| Claire Gonneville Avocate | Bankruptcy Lawyers | avocatecgonneville.com |
| Clarins Canada Inc | Life Sciences and Health Technologies (LSHT) | clarins.ca |
| Clarins Skin Spa | Health and Beauty | — |
| Claude Giroux Chiropraticien Dr | Chiropractors | drclaudegiroux.com |
| Clean Out | Cleaning Services, Cleaning Service | cleanout.ca |
| Clic Coiffure Caméléon | Beauty Institutes | cliccoiffure.com |
| Clic international | Agri-food | clicfoods.com |
| Clim Air Net | Air Conditioning Systems & Parts | facebook.com |
| Climabionet | Air Conditioning Repair & Cleaning | climabionet.com |
| Climat Exclusif Inc. | Air Conditioning Contractors | climatexclusif.ca |
| Climatech Inc | Air Conditioning Contractors, Air Purifiers | climatech.ca |
| Climatisation Letourneau Inc | Air Conditioning Systems & Parts | — |
| Climatisation Universel Inc | Air Conditioning Contractors | — |
| Clinique antidouleur chinoise | Beauty Institutes | cliniqueantidouleurchinoise.ca |
| Clinique auditive Bougie, audioprothésistes | Audiologists | cliniqueauditivebougie.ca |
| Clinique Auditive Sensorielle | Audiologists | cliniqueauditivesensorielle.com |
| Clinique Chiro-Santé | Chiropractors | drchirosante.com |
| Clinique Chiropratique | Chiropractors | chiropratiquelaval.com |
| Clinique Chiropratique d'Auteuil | Chiropractors | cliniquechiroauteuil.com |
| Clinique Chiropratique D'Auteuil | Chiropractors | — |
| Clinique Chiropratique du Dr Roch Parent | Chiropractors | — |
| Clinique Chiropratique Duvernay | Chiropractors | chiroduvernay.com |
