- Warehousing & Storage, Martinsville - Warehouse Services
- Waste & Refuse Services & Sites, Martinsville
- Watch, Clock & Jewelry Repair, Martinsville
- Water Companies, Martinsville
- Water Coolers & Water Companies - Bottled & Bulk, Martinsville
- Water Testing Labs, Martinsville
- Water Well Drilling Contractors, Martinsville
- Website Design, Management & Maintenance Services, Martinsville
- Wedding & Bridal Services, Martinsville
- Wedding Supplies & Bridal Shops, Martinsville
- Welding & Welder, Martinsville - Welding Supplies, Machines, Equipment, Services & Contractors
- Welding Supplies & Equipment, Martinsville
- Well Drilling Contractors, Martinsville
- Wesleyan Church, Martinsville
- Wheel Alignment & Axle Equipment, Martinsville
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- Wheel Alignment, Frame & Axle Service & Repair, Martinsville
- Wigs, Toupees & Hair Products Stores, Martinsville
- Will And Trust Attorneys & Lawyers, Martinsville
- Windows, Martinsville - Single & Double Hung, Casement, Sliding, Glass Block, Basement Windows & More
- Windows and Doors, Martinsville - Wholesale, Manufacturers & Suppliers
- Windshield, Martinsville - Automobile
- Wiping Cloths - Industrial Supply & Equipment, Martinsville
- Wireless & Cellular Communications Equipment & Supplies, Martinsville
- Women s Clothing Stores, Martinsville - Clothes & Accessories
- Women's Fashion Accessories, Martinsville - Handbags, Wallets, Scarves, Belts, Necklace, Bracelets, Earrings and more
- Wood Products, Martinsville
- Wood Products Manufacturers, Martinsville
- Woodworking Contractors, Martinsville - Carpentry Contractors
- Workers Compensation Insurance, Martinsville
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