- Games & Hobbies, Louisville
- 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 Equipment & Supplies, Louisville
- Gas Equipment & Supplies, Louisville - Gas Piping
- Gas Station, Louisville - Service & Filling Station
- Gate & Fence Repair, Louisville
- General Business Services, Louisville
- General Hardware Stores, Louisville
- General Merchandise Stores, Louisville
- General Travel Agents & Agencies, Louisville
- Generators, Compressors, Pumps, Motors & Fans, Louisville
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- Gift Shops, Louisville - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Louisville
- Glass Block Windows, Louisville
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Louisville
- Government, Louisville
- Graphic Design Services, Louisville - Graphic Designer
- Graphic Designer & Artist Services, Louisville
- Grinding Services, Louisville
- Grocery Stores & Supermarkets, Louisville
- Ground Transportation, Except Passenger, Louisville
- Group Homes, Louisville
- Gun Repair & Services, Louisville
- Guns & Gunsmith Services, Louisville
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