- Games & Hobbies, Newtonville
- Garage Door Repair, Newtonville
- Garage, Door & Window Products, Newtonville
- Garden & Lawn Sprinkler Repair, Installation & Service, Newtonville
- Garment & Linen Services, Newtonville
- Gas Detection, Asbestos & Lead Contractors, Newtonville
- Gas Station, Newtonville - Service & Filling Station
- Gemologists & Jewelers, Newtonville
- General Business Consulting, Newtonville
- General Business Services, Newtonville
- General Consultants, Newtonville
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- General Management Consulting Services, Newtonville - Management Consultants
- General Merchandise Stores, Newtonville
- General Surgeons, Newtonville - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Newtonville
- Gift Shops, Newtonville - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Newtonville
- Government, Newtonville
- Graphic Design Services, Newtonville - Graphic Designer
- Graphic Designer & Artist Services, Newtonville
- Grease & Oil Disposal Sites, Newtonville
- Grocery Stores & Supermarkets, Newtonville
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