- Games & Hobbies, Barbourville
- Garage, Door & Window Products, Barbourville
- Garment & Linen Services, Barbourville
- Gas Companies, Barbourville
- Gas Station, Barbourville - Service & Filling Station
- General Business Consulting, Barbourville
- General Business Services, Barbourville
- General Consultants, Barbourville
- General Management Consulting Services, Barbourville - Management Consultants
- General Merchandise Stores, Barbourville
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- Gift Shops, Barbourville - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Barbourville
- Glass & Glass Products, Barbourville
- Glass - Auto, Float, Plate, Window & Doors, Barbourville
- Glass Plate Windows, Barbourville
- Government, Barbourville
- Gravel Pits, Barbourville
- Grocery Stores & Supermarkets, Barbourville
- Ground Transportation, Except Passenger, Barbourville
- Gymnastics Schools, Barbourville
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