- Games & Hobbies, Louisville
- Garage Door Repair, 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
- Gastroenterologists, Louisville - GI Doctors, Physicians & Surgeons (Gastroenterology)
- Gemologists & Jewelers, Louisville
- General Business Consulting, Louisville
- General Business Services, Louisville
- General Consultants, Louisville
- General Freight Trucking, Louisville - Motor Freight
- General Hardware Stores, Louisville
- General Management Consulting Services, Louisville - Management Consultants
- General Merchandise Stores, Louisville
- General Surgeons, Louisville - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Louisville
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- Generators, Compressors, Pumps, Motors & Fans, Louisville
- Gift Baskets, Louisville
- Gifts By Type & Occasion, Louisville
- Gifts, Cards & Stationery Stores, Louisville
- Glass & Glass Products, Louisville
- Glass & Glazing Contractors, Louisville
- Glass - Auto, Float, Plate, Window & Doors, Louisville
- Glass Repair, Louisville - Car, Window, Auto Glass Repair
- Golf Courses, Louisville
- Government, Louisville
- Graphic Design Services, Louisville - Graphic Designer
- Graphic Designer & Artist Services, Louisville
- Greeting Card Stores, Louisville
- Grocery Stores & Supermarkets, Louisville
- Ground Transportation, Except Passenger, Louisville
- Gymnastics Schools, Louisville
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