- Games & Hobbies, Oxford
- Garage Building & Repair, Oxford - Carports - Garage Builders
- Garage Doors & Door Operating Devices, Oxford
- Garage Doors & Gates, Oxford - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Oxford
- Garbage & Rubbish Removal, Oxford
- Garment & Linen Services, Oxford
- Garment Pressing & Cleaners Agents, Oxford - Laundries & Dry Cleaners
- Gas Companies, Oxford
- General Business Consulting, Oxford
- General Business Services, Oxford
- General Consultants, Oxford
- General Hardware Stores, Oxford
- General Management Consultants & Services, Oxford
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- General Management Consulting Services, Oxford - Management Consultants
- General Merchandise Stores, Oxford
- General Travel Agents & Agencies, Oxford
- Generators, Compressors, Pumps, Motors & Fans, Oxford
- Glass & Glazing Contractors, Oxford
- Glass Tinting & Coating, Oxford - Home - Car Window Tinting
- Golf Courses, Oxford
- Government, Oxford
- Grocery Stores & Supermarkets, Oxford
- Ground Transportation, Except Passenger, Oxford
- Group Homes, Oxford
- Gun Repair & Services, Oxford
- Guns & Gunsmith Services, Oxford
- Gutters & Downspout Cleaning & Repairing, Oxford
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