- Warehousing & Storage, Ottawa - Warehouse Services
- Waste Disposal, Garbage, Trash & Rubbish Removal Contractors Equipment, Ottawa
- Waste Management, Waste Sanitation & Safety Equipment, Ottawa
- Watch, Clock & Jewelry Repair, Ottawa
- Water Filters & Purification Systems, Equipment & Supplies, Ottawa - Water Filtration Systems Companies
- Water Treatment & Conditioning Systems, Equipment & Supplies, Ottawa - Water Softener Companies
- Water Well Drilling Contractors, Ottawa
- Water Works Contractors, Ottawa
- Weapons Guns & Knives, Ottawa
- Wedding & Bridal Services, Ottawa
- Wedding Supplies & Bridal Shops, Ottawa
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- Welding & Welder, Ottawa - Welding Supplies, Machines, Equipment, Services & Contractors
- Welding Supplies & Equipment, Ottawa
- Well Drilling Contractors, Ottawa
- Well Drilling Equipment & Supplies, Ottawa - Water Well & Other Wells
- Wheel Alignment, Frame & Axle Service & Repair, Ottawa
- Windows, Ottawa - Single & Double Hung, Casement, Sliding, Glass Block, Basement Windows & More
- Windows and Doors, Ottawa - Wholesale, Manufacturers & Suppliers
- Wireless & Cellular Communications Equipment & Supplies, Ottawa
- Women s Clothing Stores, Ottawa - Clothes & Accessories
- Women's Fashion Accessories, Ottawa - Handbags, Wallets, Scarves, Belts, Necklace, Bracelets, Earrings and more
- Wrecking & Demolition Contractors, Ottawa - House & Building Demolition Companies
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