- Games & Hobbies, Ballston Spa
- Garage, Door & Window Products, Ballston Spa
- Garbage & Rubbish Removal, Ballston Spa
- Garden & Lawn Equipment & Supplies Rental & Leasing, Ballston Spa
- Garden & Lawn Sprinklers Systems – Equipment, Parts & Supplies, Ballston Spa
- Garment & Linen Services, Ballston Spa
- Gas Piping Contractors, Ballston Spa - Gas Pipe Installation & Repair Service
- Gas Station, Ballston Spa - Service & Filling Station
- General Business Consulting, Ballston Spa
- General Business Services, Ballston Spa
- General Consultants, Ballston Spa
- General Management Consulting Services, Ballston Spa - Management Consultants
- General Merchandise Stores, Ballston Spa
- General Travel Agents & Agencies, Ballston Spa
- Generators, Compressors, Pumps, Motors & Fans, Ballston Spa
- Geothermal Heating & Cooling Equipment, Systems & Supplies, Ballston Spa
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- Gifts, Cards & Stationery Stores, Ballston Spa
- Glass, Ballston Spa
- Glass & Glass Products, Ballston Spa
- Glass - Auto, Float, Plate, Window & Doors, Ballston Spa
- Glass Broken, Ballston Spa
- Golf Courses, Ballston Spa
- Golf Lessons & Instruction, Ballston Spa
- Government, Ballston Spa
- Government And Administration Attorneys & Lawyers, Ballston Spa
- Graphic Design Services, Ballston Spa - Graphic Designer
- Graphic Designer & Artist Services, Ballston Spa
- Greeting Card Stores, Ballston Spa
- Grocery Stores & Supermarkets, Ballston Spa
- Ground Transportation, Except Passenger, Ballston Spa
- Gun & Hunting & Fishing Clubs, Ballston Spa
- Gymnastics Schools, Ballston Spa
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