| WIDO | Montréal | Ad Production |
| Wienstein and Gavinos Restaurant | Centre-Ville | Tout Bars et restaurants |
| Wiggle Room | Montréal | Tout Bars et restaurants |
| WIKA INSTRUMENTS LTÉE | Montréal | Life Sciences and Health Technologies (LSHT) |
| Wiki - Université de Montréal | Montréal | Tout Enseignement et savoir |
| Wilbar Group | Lasalle | Tout Entreprises et services |
| Wilder & Davis Luthier Inc. | Montréal | Tout Commerces au détail |
| Wildi International Inc | Montréal | Tout Entreprises et services |
| Wilkat Guitars | Pierrefonds | Tout Commerces au détail |
| William and Maurice | Montréal | Tout Commerces au détail |
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| William Bosc | Montréal | Flooring |
| William Hardy-Abeloos Physio | Westmount | Physiotherapy |
| William J. Walter | Ste-Rose | Tout Commerces au détail |
| William J. Walter | Longueuil | Not Profit, Grocery Stores |
| William Latter Elementary School | Saint-Bruno | Tout Enseignement et savoir |
| William Poulin-Lord - Courtier Immobilier Propri o Direct Inc. / Région De Québec | Québec | Real Estate Offices, Courtier immobilier |
| William Scully Ltée/Limited | Montréal | Tout Entreprises et services |
| William Tibuduica | Montréal | Massage Therapy |
| William-Mills Products | Montréal | Automobiles, Grocery Stores |
| Williams Asselin Ackaoui&Associés | Montréal | Landscaping |
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| Williams, Asselin, Ackaoui & Associ... | Montréal | Tout Entreprises et services |
| Willis Towers Watson (WTW) | Centre-Ville | Tout Entreprises et services |
| Wilman Electrique Inc | Montréal | Electricians |
| Wilson & Lafleur | Montréal | Book Stores |
| Wilson & Lafleur Ltée | Montréal | Tout Commerces au détail |
| Wilson M | Montréal | Alternators & Starters |
| WILSON MACHINERIE CIE LTÉE | La Salle | Aerospace |
| Wiltron International | Sainte-Thérèse | Amusement Machines & Supplies |
| Windigo Aventure | Petite-Patrie | Tout Tourisme et hĂ´tels |
| Windshield123.com | Montréal | Auto Body Shop Equipment & Supplies |
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| Windyne Voiles Sails | Dorval | Boat Equipment & Supplies, Marine Equipment & Supplies |
| Wing Noodles Ltd | Montréal | Chinese Food Manufacturers & Distributors |
| Wingo Consulting Import And Export | Montréal | Aviation Consultants & Services |
| Winmar Property Restoration Specialists - Rive S ud | Brossard | Building Repair & Restoration |
| Winner 4 Life Rep | Sainte-Catherine | Business & Trade Organizations |
| Winners | Saint-Hyacinthe | Bowling Clothing & Accessories |
| Winnie's Bar & Restaurant | Centre-Ville | Tout Bars et restaurants |
| WinningMinds | Montréal | Information Technologies (IT) |
| WINO | Montréal | Tout Commerces au détail |
| Winston Chan | Montréal | Chiropractors |
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| Winston Miller Construction Inc | Montréal | Home Improvement |
| Winward Silks Of Canada | Montréal | Christmas Decorations & Lights |
| Wipeco Industries | Montréal | Tout Entreprises et services |
| Wipro Technologies | Montréal | Information Technologies (IT) |
| Wirewerks Inc. | Montréal | Tout Entreprises et services, Tout Informatique et internet |
| Wirth-Brand Inc | Montréal | Aluminum |
| Wise Communication | Montréal | Communications & Public Relations Consultants |
| Wize | Montréal | Alternative Health |
| Acier Wirth Steel | Westmount | Aluminum |
| Aliments Wong Wing Inc | Quartier Latin Et Centre-Sud | Tout Entreprises et services |
