| SC Johnson & Fils Limitée | Varennes | Life Sciences and Health Technologies (LSHT) |
| SC Johnson & Son Limitée | Laval | Life Sciences and Health Technologies (LSHT) |
| SC Mecanique | Montréal | Car Repair |
| Sca Caroline Coulombe | Brossard | Bookkeeping |
| Scale Tron Inc. | Lachine | Tout Entreprises et services |
| Scalini Di Mare | Greenfield Park | Chinese Food Restaurants |
| Scanbuffet | Montréal | Caterers |
| Scandinave les bains | Montréal | Tout Commerces au détail |
| Scandinave Spa Vieux-Montréal | Montréal | Beauty & Health Spas |
| Scangift Ltd. | Pointe-Claire | Tout Entreprises et services |
Advertisement (Desktop) Advertisement (Mobile) |
| Scanline VFX GmbH | Montréal | Information Technologies (IT) |
| Scantech Inc | Greenfield Park | Boat Equipment & Supplies, Marine Equipment & Supplies |
| Scardana Inc | Greenfield Park | Boat Dealers & Brokers |
| Scardera Inc | Longueuil | Baskets |
| Scavolini | Montréal | Kitchen Cabinets |
| SCDS PRO INC. | Montréal | Aerospace |
| SCE Les Pro Paintre | Montréal | Painters |
| Scellant du Nord | Laval | Home Improvement |
| Scellant Rive-Sud | Montréal | Home Improvement |
| Scellant Supérieur | Montréal | Landscaping |
Advertisement (Desktop) Advertisement (Mobile) |
| Scene 2 home staging | Chomedey | Tout Entreprises et services |
| Scented Path | Montréal | Aromatherapy |
| Scentral "The Original" Cleaning Services | Mont-Royal | Cleaning Services, Cleaning Service |
| Scentral Cleaning Services | Montréal | Cleaning Services, Cleaning Service |
| Scentral Nettoyage & Plus | Mont-Royal | Cleaning Services, Cleaning Service |
| Scentral Nettoyage & Plus | Montréal | Carpet & Rug Cleaning |
| SCG Witchery | Brossard | Astrologers & Psychics |
| Schaaf Norbert | Montréal | Painters |
| Schaffer Plumbing | Montréal | Plumbing |
| Schindler Elevator Corporation | Ville-Mont-Royal | Tout Entreprises et services |
Advertisement (Desktop) Advertisement (Mobile) |
| Schleeh Design | Montréal | Balloons |
| Schleeh Design INC. | Montréal | Furniture Stores |
| Schneider Canada Inc | Brossard | Life Sciences and Health Technologies (LSHT) |
| Schneider Electric | Montréal | Electricians |
| Schneider Electric Inc. | Pointe-Claire | Tout Entreprises et services |
| Schokbéton SARAMAC | Lachenaie | Tout Entreprises et services |
| Schon | Outremont | Beauty & Fitness, Hairdressers & Beauty Salons |
| Schonfeld I | Montréal | Health Services |
| School of Computer Science - McGill | Centre-Ville | Tout Enseignement et savoir |
| School of Religious Studies - McGil... | Centre-Ville | Tout Enseignement et savoir |
Advertisement (Desktop) Advertisement (Mobile) |
| SCHRÉDER INC | Montréal | Life Sciences and Health Technologies (LSHT) |
| Schulich Library | Montréal | Not Profit, library |
| Schumacher Design | Pointe-Saint-Charles | Tout Entreprises et services |
| Schwartz Gerson | Montréal | Business Lawyers |
| Schwartz's Deli | Montréal | Tout Bars et restaurants |
| SCI Group Inc | Montréal | Bus & Coach Rental & Charter |
| Sci Group Inc | Laval | Cold-Storage Warehouses |
| SCI Logistics | Longueuil | Cold-Storage Warehouses |
| Sciage de Béton St Léonard Ltée | Anjou | Building Contractors |
| Sciage de Béton St-Léonard Enr. | Anjou | Tout Entreprises et services |
