- Garage Doors & Door Operating Devices, Louisville
- Garage Doors & Gates, Louisville - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Louisville
- Garment & Linen Services, Louisville
- Gas Station, Louisville - Service & Filling Station
- General Business Consulting, Louisville
- General Business Services, Louisville
- General Consultants, Louisville
- General Hardware Stores, Louisville
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- General Management Consulting Services, Louisville - Management Consultants
- General Merchandise Stores, Louisville
- Gifts, Cards & Stationery Stores, Louisville
- Government, Louisville
- Grocery Stores & Supermarkets, Louisville
- Ground Transportation, Except Passenger, Louisville
- Gun Repair & Services, Louisville
- Guns & Gunsmith Services, Louisville
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