- Garment & Linen Services, Clarksville
- Gas & Air Compressors, Clarksville
- Gas Station, Clarksville - Service & Filling Station
- Gasoline, Clarksville
- General Business Services, Clarksville
- General Merchandise Stores, Clarksville
- Generators, Compressors, Pumps, Motors & Fans, Clarksville
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- Gifts, Cards & Stationery Stores, Clarksville
- Glass & Glass Products, Clarksville
- Glass - Auto, Float, Plate, Window & Doors, Clarksville
- Glass Plate Windows, Clarksville
- Government, Clarksville
- Grocery Stores & Supermarkets, Clarksville
- Ground Transportation, Except Passenger, Clarksville
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