- Labels & Tags, Addison
- Laboratories Dental, Addison
- Laboratories Medical, Addison
- Laminating Machine, Supplies & Equipment, Addison
- Land Surveyor, Addison - Land Surveying Services
- Landscape Contractors & Designers, Addison
- Landscaping, Addison
- Laundry & Dry Cleaning Equipment & Supplies, Addison - Cleaners & Dryers Sales, Repair, Service & Leasing
- Laundry Self Service, Addison
- Lawn & Garden Equipment & Supplies, Addison
- Lawn & Garden Services, Addison
- Lawn & Garden Sprinkler Systems, Addison
- Lawn & Tree Service, Addison
- Lawn Maintenance Services, Addison
- Lawn Mowers & Power Equipment, Addison
- Lawyers & Attorneys, Addison
- Legal & Tax Services, Addison
- Legal Professionals, Addison
- Libraries, Addison
- License Services, Addison
- Life Insurance, Addison
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- Lighting Consultants, Addison
- Lighting Contractors, Addison
- Lighting Fixtures & Equipment, Addison
- Limousine Service, Addison
- Linen Supply Services, Addison
- Liquid Filters, Addison
- Liquor Stores, Addison
- Lithograph Inks Manufacturers, Addison
- Litigation / Trial Attorneys & Lawyers, Addison
- Loans Personal, Addison
- Locks, Addison
- Locksmiths, Addison - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Addison
- Lodging, Addison
- Logistics Freight, Addison
- Long Haul Trucking Companies, Addison
- Lp Gas Equipment & Supplies, Addison
- Luggage & Accessories , Addison
- Lumber Companies, Addison - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Addison
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