- Games & Hobbies, Huntsville
- Garage Doors & Door Operating Devices, Huntsville
- Garage Doors & Gates, Huntsville - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Huntsville
- Garbage & Rubbish Removal, Huntsville
- Garment & Linen Services, Huntsville
- Gas & Other Services Combined, Huntsville
- Gas Companies, Huntsville
- Gas Station, Huntsville - Service & Filling Station
- Gastroenterologists, Huntsville - GI Doctors, Physicians & Surgeons (Gastroenterology)
- General Business Consulting, Huntsville
- General Business Services, Huntsville
- General Consultants, Huntsville
- General Hardware Stores, Huntsville
- General Management Consulting Services, Huntsville - Management Consultants
- General Merchandise Stores, Huntsville
- General Travel Agents & Agencies, Huntsville
- Generators, Compressors, Pumps, Motors & Fans, Huntsville
- Geosynthetics, Huntsville
- Geothermal Heating & Cooling Contractors, Huntsville - Geothermal HVAC - Installation
- Gift Shops, Huntsville - Gift, Novelty & Souvenir Stores
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- Gifts, Cards & Stationery Stores, Huntsville
- Glass & Glass Products, Huntsville
- Glass & Glazing Contractors, Huntsville
- Glass - Auto, Float, Plate, Window & Doors, Huntsville
- Glass Stained & Leaded, Huntsville
- Glass Tinting & Coating, Huntsville - Home - Car Window Tinting
- Golf Clubs Private, Huntsville
- Golf Courses, Huntsville
- Golf Driving Ranges, Huntsville
- Golf Lessons & Instruction, Huntsville
- Goodyear Tires, Huntsville - Dealers
- Gospel Church, Huntsville
- Government, Huntsville
- Granite, Huntsville
- Graphic Design Services, Huntsville - Graphic Designer
- Graphic Designer & Artist Services, Huntsville
- Greeting Card Stores, Huntsville
- Grills & Grilling Equipment & Supplies, Huntsville
- Grocery Stores & Supermarkets, Huntsville
- Ground Transportation, Except Passenger, Huntsville
- Gutter & Flashing Contractors, Huntsville - Metal - Copper Flashing - Gutter Cleaning & Repair Services
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