- Games & Hobbies, Galveston
- Garage Doors & Door Operating Devices, Galveston
- Garage Doors & Gates, Galveston - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Galveston
- Garment & Linen Services, Galveston
- Gas Appliance Repair, Maintenance & Service, Galveston
- Gas Companies, Galveston
- Gas Engine, Galveston
- Gas Station, Galveston - Service & Filling Station
- Gastroenterologists, Galveston - GI Doctors, Physicians & Surgeons (Gastroenterology)
- Gate & Fence Repair, Galveston
- General Business Consulting, Galveston
- General Business Services, Galveston
- General Consultants, Galveston
- General Freight Trucking, Galveston - Motor Freight
- General Hardware Stores, Galveston
- General Management Consulting Services, Galveston - Management Consultants
- General Merchandise Stores, Galveston
- General Travel Agents & Agencies, Galveston
- Gift Baskets, Galveston
- Gift Shops, Galveston - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Galveston
- Gifts, Cards & Stationery Stores, Galveston
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- Glass & Glass Products, Galveston
- Glass & Glazing Contractors, Galveston
- Glass - Auto, Float, Plate, Window & Doors, Galveston
- Glass Hand Blown Art, Galveston
- Glass Plate Windows, Galveston
- Glass Tinting & Coating, Galveston - Home - Car Window Tinting
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Galveston
- Golf Cars & Carts, Galveston
- Golf Cars & Carts Repair & Service, Galveston
- Golf Courses, Galveston
- Gourmet Restaurants, Galveston
- Government, Galveston
- Grain Elevators, Galveston
- Graphic Design Services, Galveston - Graphic Designer
- Graphic Designer & Artist Services, Galveston
- Grease Traps, Galveston
- Greek Churches, Galveston
- Greek Restaurants, Galveston
- Grocery Stores & Supermarkets, Galveston
- Ground Transportation, Except Passenger, Galveston
- Gun Repair & Services, Galveston
- Guns & Gunsmith Services, Galveston
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