- Garage, Door & Window Products, Columbus
- Garbage & Rubbish Removal, Columbus
- Garden & Lawn Sprinkler Repair, Installation & Service, Columbus
- Garment & Linen Services, Columbus
- Gas Equipment Industrial, Columbus
- Gas Station, Columbus - Service & Filling Station
- Gasoline, Columbus
- General Business Consulting, Columbus
- General Business Services, Columbus
- General Consultants, Columbus
- General Hardware Stores, Columbus
- General Merchandise Stores, Columbus
- General Surgeons, Columbus - General Surgery Doctors, Physicians & Surgeons
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- General Travel Agents & Agencies, Columbus
- Generators, Compressors, Pumps, Motors & Fans, Columbus
- Gifts, Cards & Stationery Stores, Columbus
- Glass & Glass Products, Columbus
- Glass - Auto, Float, Plate, Window & Doors, Columbus
- Glass Plate Windows, Columbus
- Golf Courses, Columbus
- Government, Columbus
- Grease Traps, Columbus
- Grills & Grilling Equipment & Supplies, Columbus
- Grocery Stores & Supermarkets, Columbus
- Ground Transportation, Except Passenger, Columbus
- Guide & Directory Advertising Services, Columbus
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