- Games & Hobbies, Stony Brook
- Garage Door Repair, Stony Brook
- Garage Doors & Door Operating Devices, Stony Brook
- Garage Doors & Gates, Stony Brook - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Stony Brook
- Garbage & Rubbish Removal, Stony Brook
- Garden & Lawn Sprinkler Repair, Installation & Service, Stony Brook
- Garden & Lawn Sprinklers Systems – Equipment, Parts & Supplies, Stony Brook
- Garment & Linen Services, Stony Brook
- Gas Appliance Repair, Maintenance & Service, Stony Brook
- Gas Station, Stony Brook - Service & Filling Station
- Gemologists & Jewelers, Stony Brook
- General Business Consulting, Stony Brook
- General Business Services, Stony Brook
- General Consultants, Stony Brook
- General Management Consulting Services, Stony Brook - Management Consultants
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- General Merchandise Stores, Stony Brook
- General Surgeons, Stony Brook - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Stony Brook
- Gift Baskets, Stony Brook
- Gift Shops, Stony Brook - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Stony Brook
- Gifts, Cards & Stationery Stores, Stony Brook
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Stony Brook
- Golf Courses, Stony Brook
- Government, Stony Brook
- Graphic Design Services, Stony Brook - Graphic Designer
- Graphic Designer & Artist Services, Stony Brook
- Greek Restaurants, Stony Brook
- Grocery Stores & Supermarkets, Stony Brook
- Ground Transportation, Except Passenger, Stony Brook
- Gymnastics Schools, Stony Brook
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