| Christina Design | Home Improvement | — |
| Cimetière La Fabrique Des Saints Anges | Cemeteries | — |
| Cintube Ltée | Aluminum, Tout Entreprises et services | cintube.com |
| Cité Médicale Lachine | Medical Clinics | — |
| Clariant Canada Inc Masterbatches Division | Agricultural Chemicals | clariant.com |
| Classé Audio Inc. | Information Technologies (IT), Tout Entreprises et services | classeaudio.com |
| Clinique Auditive De L'Ouest | Audiologists | cliniqueauditivedelouest.com |
| Clinique D'Urgence 32ème Avenue Inc | Medical Clinics | csssdll.qc.ca |
| Clinique de Réadaptation Universelle | Physiotherapy | readaptation.universelle.com |
| Clinique MFML | Tout Entreprises et services | cliniquemaxillo.com |
| Clinique Physiothérapie Universelle Lachine | Physiotherapy | — |
| Clinique Pédiatrie | Medical Clinics | — |
| Clinique Veterinaire Lachine Inc | Animal Medications | cvlachine.com |
| Clinique Vétérinaire Sur Le Lac | Animal Medications | veterinairesurlelac.ca |
| CLSC De Dorval Lachine | CLSC | — |
| Club de Golf Meadowbrook | Tout Arts et divertissement | clubdegolfmeadowbrook.com |
| Coca Cola Bottling Company | Agri-food | cocacola.ca |
| Collège Sainte-Anne de Lachine | Tout Enseignement et savoir | secondaire.lachine.sainteanne.ca |
| Communications Fg Cellier | fg | — |
| Corporate Aircraft Charters | Aircraft & Private Jet Charter | corporatecharters.ca |
| Corporation des Bijoutiers du Québec | Tout Commerces au détail | cbq.qc.ca |
| Courrier Can-Us Liaison | Cans | facebook.com |
| Couvreur Sipa 2002 Inc | Roofing | couvreursipa2002.ca |
| Cowper Inc. | Tout Entreprises et services | cowper.ca |
| CPD Construction Products | Tout Entreprises et services | cpd.ca |
| Cpd Lachine | Caisses Populaires | — |
| Crate & Barrel Warehouse | Shopping Mall | crateandbarrel.ca |
| Crazy Haircut | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Cuisines Jean Bernard | Kitchen Cabinets | — |
| Custom Downstream Systems Inc. | Tout Entreprises et services | cdsmachines.com |
| Day & Ross | Tout Entreprises et services | dayross.com |
| Debra Wi | wi | — |
| Desjardins | Caisses Populaires | — |
| Directed Electronics | Tout Commerces au détail | directed.com |
| Directed Electronics Canada Inc | Car Alarm Systems | directechs.com |
| Directed Electronics Canada Inc | Car Alarm Systems | — |
| Directed Electronics Canada Inc | Car Alarm Systems | — |
| DL Rénovation | Home Improvement | yp.ca |
| Dor Docteur | Tout Entreprises et services | doordoctor.com |
| Dorex | Tout Entreprises et services | dorex.com |
| Doverco Inc. | Tout Entreprises et services | doverco.com |
| Dr Amanda Cristinziano | Dentists | cabinetdentaire.ca |
| Dre Nathalie Leduc | Dentists | cabinetdentaire.ca |
| Dtech Pro | Computer Repair & Cleaning | dtechpro.ca |
| Dubo Rénove Inc | Home Improvement | — |
| Duro Dyne Canada Inc. | Tout Entreprises et services | durodynecanada.com |
| Déménagement Wind Movers | Building & House Movers | — |
| EASTERN AEROCAST | Aerospace | — |
| Eaton | Tout Entreprises et services | eaton.com |
| Economie Familiale Villani | Appliance Repair | — |
