- Games & Hobbies, Derry
- Garage Doors & Door Operating Devices, Derry
- Garage Doors & Gates, Derry - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Derry
- Garbage & Rubbish Removal, Derry
- Garment & Linen Services, Derry
- Gas Station, Derry - Service & Filling Station
- General Business Consulting, Derry
- General Business Services, Derry
- General Consultants, Derry
- General Freight Trucking, Derry - Motor Freight
- General Management Consulting Services, Derry - Management Consultants
- General Merchandise Stores, Derry
- Generator Sales & Rental, Derry - Contractors Supplies & Equipment
- Generators, Compressors, Pumps, Motors & Fans, Derry
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- Gifts, Cards & Stationery Stores, Derry
- Glass & Glass Products, Derry
- Glass - Auto, Float, Plate, Window & Doors, Derry
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Derry
- Golf Course Architect, Derry
- Golf Course Architects, Derry
- Golf Courses, Derry
- Government, Derry
- Granite, Derry
- Graphic Design Services, Derry - Graphic Designer
- Graphic Designer & Artist Services, Derry
- Greeting Card Stores, Derry
- Grocery Stores & Supermarkets, Derry
- Ground Transportation, Except Passenger, Derry
- Gummed Tape, Derry
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