- Laboratories Dental, Elizabethton
- Laboratories Medical, Elizabethton
- Land Surveyor, Elizabethton - Land Surveying Services
- Landscape Contractors & Designers, Elizabethton
- Landscaping, Elizabethton
- Late Night Restaurants, Elizabethton
- Laundromats & Dry-Cleaning, Coin-Operated, Elizabethton
- Laundry Self Service, Elizabethton
- Lawn & Garden Equipment & Supplies, Elizabethton
- Lawn & Garden Services, Elizabethton
- Lawn Maintenance Services, Elizabethton
- Lawn Mowers & Power Equipment, Elizabethton
- Lawyers & Attorneys, Elizabethton
- Legal & Tax Services, Elizabethton
- Legal Professionals, Elizabethton
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- Lending Services, Elizabethton
- Libraries, Elizabethton
- Life Insurance, Elizabethton
- Liquor Stores, Elizabethton
- Loans Check Cashing, Elizabethton
- Loans Personal, Elizabethton
- Loans Title Services, Elizabethton
- Locks, Elizabethton
- Locksmiths, Elizabethton - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Elizabethton
- Lodging, Elizabethton
- Long Haul Trucking Companies, Elizabethton
- Lumber Companies, Elizabethton - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Elizabethton
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