- Cable TV Companies & Services, Clarksville
- Cafe Restaurants, Clarksville
- Cakes, Pies, & Pastries, Clarksville
- Camera Stores - Supplies & Services, Clarksville - Camera Repair & Service Shops
- Cameras & Photographic Equipment & Supplies, Clarksville - Camera Shops
- Cameras & Photographic Supplies, Clarksville
- Campgrounds, Clarksville
- Camping Supplies & Equipment Stores, Clarksville - Tents, Gear & Accessories
- Car Detailing & Wash Service, Clarksville - Auto Detailing
- Car Rental, Clarksville - Rental Cars & Lease Service
- Car Tune Up Service, Clarksville - Auto Tune Up
- Car Wash, Cleaning, Wax & Polish Service, Clarksville
- Cardiologists, Clarksville - Heart Doctors, Physicians & Surgeons (Cardiology)
- Carpenters, Clarksville - Carpentry Contractors
- Carpet & Rug Cleaners Equipment & Supplies, Clarksville
- Carpet Rug & Upholstery Cleaners, Clarksville
- Cars, Truck, Van & SUV Car Dealerships, Clarksville - Auto Dealers
- Casual Dining Restaurants, Clarksville
- Caterers Food Services, Clarksville
- Catholic Churches, Clarksville
- Cell & Mobile Installation Repairs, Clarksville
- Cellular & Mobile Phone Equipment & Systems Installation, Repair & Service, Clarksville
- Cellular & Mobile Phone Service, Clarksville
- Cellular & Wireless Telephones Rental & Leasing, Clarksville
- Central American Restaurants, Clarksville
- Check Cashing Services, Clarksville
- Cheerleading Schools, Clarksville
- Chemical Product Manufacturers, Clarksville
- Chemicals & Related Products, Clarksville
- Chicken Restaurants, Clarksville
- Child Care & Day Care Services, Clarksville
- Children & Family Entertainment, Clarksville
- Children's Clothing Stores, Clarksville - Infant, Babies & Kids Clothing
- Chinese Restaurants, Clarksville
- Chiropractor, Clarksville
- Christian Churches, Clarksville
- Church Of Christ, Clarksville
- Churches 1 Of 3, Clarksville
- Churches 2 Of 3, Clarksville
- Churches 3 Of 3, Clarksville
- Cigar, Cigarette & Tobacco Store & Supplies, Clarksville
- City & County Administrative Agencies, Clarksville
- City & County Government, Clarksville
- City & County Law Enforcement, Clarksville
- Cleaning & Maintenance Services, Clarksville
- Cleaning & Restoration Contractors, Including Sandblasting, Clarksville
- Cleaning Supplies, Systems & Equipment, Clarksville - Janitorial Supplies
- Clinics, Clarksville
- Clock & Watch Stores, Clarksville
- Clothing & Accessories Resale & Consignment Shops, Clarksville
- Clothing Stores, Clarksville - Clothes & Accessories
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- CNC Machine Shop, Clarksville
- Cocktail Lounges, Clarksville
- Coin Dealers & Supplies , Clarksville
- Collectibles, Clarksville
- Collision Repair & Services, Clarksville
- Combustibles & Explosives, Clarksville
- Commercial Equipment, Clarksville
- Commercial Printing, Clarksville
- Communications Services, Clarksville
- Communications Systems & Equipment Rental & Leasing, Clarksville
- Community & Recreational Facilities, Clarksville
- Community Church, Clarksville
- Community Churches, Clarksville
- Community Services, Clarksville
- Computer & Equipment Rental & Leasing, Clarksville
- Computer & Laptop Repair, Clarksville - PC Repair Services
- Computer & Software Stores, Clarksville
- Computer Repair, Clarksville
- Concrete, Clarksville - Cement & Concrete Products, Suppliers, Companies
- Concrete & Cement, Clarksville
- Concrete Contractors, Clarksville - Concrete Construction & Concrete Companies
- Concrete Product Manufacturers, Clarksville
- Construction, Clarksville
- Construction Companies, Clarksville
- Construction Services, Clarksville
- Consultants & Services, Clarksville
- Contact Lenses, Clarksville
- Contractor Equipment & Supplies, Clarksville - Construction Equipment & Machinery
- Contractors Equipment & Supplies - Rental & Leasing, Clarksville
- Contractors Supplies & Equipment, Clarksville
- Convenience Stores, Clarksville
- Convention & Meeting Facilities, Clarksville - Meeting Rooms
- Cookies, Clarksville
- Cooking, Food & Beverage Equipment, Clarksville
- Cooling System & Parts, Clarksville - Antifreeze, Radiator, Water Pump, Fan, Hoses, Belts, etc
- Cosmetics, Clarksville
- Cosmetics & Perfumes Outlets, Clarksville
- Cosmetics, Toiletries, Perfumes & Beauty Supply Stores, Clarksville
- Cosmetology School, Clarksville
- Counseling Services, Clarksville
- County Police, Clarksville
- Crab House Restaurants, Clarksville
- Craft Supplies, Clarksville - Hobby & Craft Stores
- Credit & Debt Counseling Services, Clarksville
- Credit Restoration Service, Clarksville
- Credit Unions, Clarksville
- Cremation Services, Supplies & Equipment, Clarksville
- Critical & Emergency Care Doctors, Clarksville - Intensive Care Doctors, Physicians & Surgeons
- Crushed Stone & Rock, Clarksville - Crushed Granite, Concrete, Gravel, etc
- Curtains, Drapes & Window Treatments and Coverings, Clarksville - Drapery & Upholstery Fabric Stores
- Custom Made Boots & Shoes, Clarksville
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