| Salon Racine Carrée | Beauty & Fitness, Hairdressers & Beauty Salons | studioracinecarree.ca |
| Salon Satisfaction Coiffure | Health and Beauty | facebook.com |
| Sam Plaît | Clock Repair | facebook.com |
| Samsung Medical Engineering Corporation | Life Sciences and Health Technologies (LSHT) | eng.ssmed.net |
| Samuel & Fils & Cie (Québec) Ltée | Tout Entreprises et services | samuel.com |
| Sanbec Inc. | Tout Entreprises et services | sanbec.ca |
| Sani-Montreal | Cleaning & Janitorial Supplies | facebook.com |
| Sanofi Canada | Life Sciences and Health Technologies (LSHT) | sanofi.ca |
| Sanofi Canada Inc. | Life Sciences and Health Technologies (LSHT) | sanofi-aventis.ca |
| SATURDAY SCHOOL OF ST. NICHOLAS LAVAL | Blue Pages | — |
| Saucier Serge Compt Agree | Accountants | — |
| Sauna Spécialiste Inc | Health and Beauty | facebook.com |
| Sav's Salon | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| SC Johnson & Son Limitée | Life Sciences and Health Technologies (LSHT) | scjohnson.com |
| Scellant du Nord | Home Improvement | — |
| Sci Group Inc | Cold-Storage Warehouses | — |
| Scie O Bois | Arts & Crafts Stores | facebook.com |
| SCOUTS GROUP/Laval Hellenic Community | Blue Pages | — |
| SEL | Tout Entreprises et services | sel-laval.com |
| SellOff Vacations Inc | Boat Equipment & Supplies, Marine Equipment & Supplies | — |
| Sensations Traiteur | Buffets | facebook.com |
| Sentimental Moments Wedding, Rental, Event Decor | Bridal Shops | facebook.com |
| Serge Baril & Associates Inc. | Tout Entreprises et services | baril.ca |
| Serge Couture | Couture, COUTURE | — |
| Service 2000 Électroménagers | Appliance Repair & Service | cteq.ca |
| Service D'Enregistrement G S T Enr | CD & DVD Duplication | facebook.com |
| Service D'esthetique a Domicile - Gabrielle Douv ille | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Service De Pneu SPS Inc | Tire Shop | — |
| Service de Pneus TB | Tire Shop | pneuseconoprix.com |
| Service Payworks | Information Technologies (IT) | payworks.ca |
| Service Solution | Painters | servicesolution.ca |
| Services Alimentaires Le Chatel | Antique Dealers | lechatel.ca |
| Services bioanalytique Biotrial | Life Sciences and Health Technologies (LSHT) | biotrial.com |
| Services d'Entretien GEM | Cleaning Services, Cleaning Service | servicesentretiengem.ca |
| Services D'Entretien Ménager Ardiz Can Inc | Cleaning Services, Cleaning Service | facebook.com |
| Services De Pneus Lemieux | Tire Shop | pneuslemieux.com |
| Services de Réfrigération R & S Inc | Commercial Refrigeration Sales & Services | refrigerationrs.com |
| Services de Ventilation M.J.E | Cleaning Services, Cleaning Service | mjeventilation.ca |
| Services JMB Inc | Cleaning Services, Cleaning Service | servicesjmb.ca |
| Services Pro Yves Proulx Inc | Painters | — |
| Servier Canada Inc. | Life Sciences and Health Technologies (LSHT), Tout Entreprises et services | servier.ca |
| Sforzando Productions | Computer Consultants | facebook.com |
| SHAKER Cuisine & Mixologie Centropolis | Beauty & Fitness, Hairdressers & Beauty Salons | shakercuisineetmixologie.com |
| Shan Boutique | Bikinis, Swimsuits & Swimming Accessories | shan.ca |
| Shants Auto | Auto Body Shop | — |
| SHELL ST. MARTIN SHELL | Automobiles | — |
| SHIELD OF ATHENA (Services) | Blue Pages | — |
| Shine Pressure | Chemical & Pressure Cleaning Systems | — |
| Shire Pharmaceutical | Pharmacy | facebook.com |
| Si-Gem Electrique | Electricians | — |
