- Land Companies, Clarksville
- Land Planning Services, Clarksville
- Land Surveyor, Clarksville - Land Surveying Services
- Laundry Self Service, Clarksville
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Clarksville
- Lawyers & Attorneys, Clarksville
- Legal Professionals, Clarksville
- Life Insurance, Clarksville
- Livestock, Clarksville
- Loans Check Cashing, Clarksville
- Loans Personal, Clarksville
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- Lodging, Clarksville
- Lodging Services, Clarksville
- Long Haul Trucking Companies, Clarksville
- Lp Gas Equipment & Supplies, Clarksville
- Lumber & Lumber Products, Clarksville
- Lumber & Lumber Products, Clarksville
- Lumber & Wood Products Manufacturers, Clarksville
- Lumber Brokers, Clarksville
- Lumber Companies, Clarksville - Wholesale, Manufacturers & Suppliers
- Lumber Treating & Drying, Clarksville
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