- Games & Hobbies, East Hartford
- Garage Building & Repair, East Hartford - Carports - Garage Builders
- Garage Doors & Door Operating Devices, East Hartford
- Garage Doors & Gates, East Hartford - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, East Hartford
- Garment & Linen Services, East Hartford
- Gas Companies, East Hartford
- Gas Station, East Hartford - Service & Filling Station
- Gasoline, East Hartford
- Genealogy, East Hartford
- General Business Consulting, East Hartford
- General Business Services, East Hartford
- General Consultants, East Hartford
- General Freight Trucking, East Hartford - Motor Freight
- General Management Consultants & Services, East Hartford
- General Management Consulting Services, East Hartford - Management Consultants
- General Merchandise Stores, East Hartford
- General Travel Agents & Agencies, East Hartford
- Generators, Compressors, Pumps, Motors & Fans, East Hartford
- Geotechnical Soils Engineer, East Hartford
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- Gift Shops, East Hartford - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, East Hartford
- Glass & Glass Products, East Hartford
- Glass & Glazing Contractors, East Hartford
- Glass - Auto, Float, Plate, Window & Doors, East Hartford
- Glass Giftware, East Hartford
- Glass Plate Windows, East Hartford
- Glass Tinting & Coating, East Hartford - Home - Car Window Tinting
- Gold, Silver & Platinum Buyers, Sellers & Dealers, East Hartford
- Golf Cars & Carts, East Hartford
- Golf Clubs Private, East Hartford
- Golf Courses, East Hartford
- Golf Driving Ranges, East Hartford
- Government, East Hartford
- Graphic Design Services, East Hartford - Graphic Designer
- Graphic Designer & Artist Services, East Hartford
- Grinding Services, East Hartford
- Grocery Stores & Supermarkets, East Hartford
- Ground Transportation, Except Passenger, East Hartford
- Group Homes, East Hartford
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