- Labor Organizations, Vaughan
- Laboratories Dental, Vaughan
- Laboratories Medical, Vaughan
- Land Surveyor, Vaughan - Land Surveying Services
- Landscape Contractors & Designers, Vaughan
- Landscaping, Vaughan
- Landscaping Materials & Supplies, Vaughan
- Laser Therapy Clinics, Vaughan
- Late Night Restaurants, Vaughan
- Lawn & Garden Equipment & Supplies, Vaughan
- Lawyers & Attorneys, Vaughan
- Legal Professionals, Vaughan
- Life Insurance, Vaughan
- Lighting Fixtures & Equipment, Vaughan
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- Limousine Service, Vaughan
- Linens, Vaughan
- Linens & Towels Manufacturers, Vaughan
- Liquor Stores, Vaughan
- Loans Personal, Vaughan
- Locks, Vaughan
- Locksmiths, Vaughan - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Vaughan
- Lodging, Vaughan
- Long Haul Trucking Companies, Vaughan
- Lp Gas Equipment & Supplies, Vaughan
- Lumber & Lumber Products, Vaughan
- Lumber & Wood Products Manufacturers, Vaughan
- Lumber Companies, Vaughan - Wholesale, Manufacturers & Suppliers
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