- Games & Hobbies, Melville
- Garage Door Repair, Melville
- Garage, Door & Window Products, Melville
- Garbage & Rubbish Removal, Melville
- Garment & Linen Services, Melville
- Garment Pressing & Cleaners Agents, Melville - Laundries & Dry Cleaners
- Gas Companies, Melville
- Gas Station, Melville - Service & Filling Station
- Gastroenterologists, Melville - GI Doctors, Physicians & Surgeons (Gastroenterology)
- General Business Consulting, Melville
- General Business Services, Melville
- General Consultants, Melville
- General Freight Trucking, Melville - Motor Freight
- General Hardware Stores, Melville
- General Management Consulting Services, Melville - Management Consultants
- General Merchandise Stores, Melville
- General Surgeons, Melville - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Melville
- Generator Repair, Melville
- Generators, Melville - Solar, Steam, Wind Power, etc
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- Gift Baskets, Melville
- Gifts By Type & Occasion, Melville
- Gifts, Cards & Stationery Stores, Melville
- Glass & Glass Products, Melville
- Glass - Auto, Float, Plate, Window & Doors, Melville
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Melville
- Golf Clubs Private, Melville
- Golf Courses, Melville
- Gourmet Food Stores, Melville
- Gourmet Restaurants, Melville
- Government, Melville
- Granite, Melville
- Graphic Design Services, Melville - Graphic Designer
- Graphic Designer & Artist Services, Melville
- Greenhouse Supplies, Kits & Equipment, Melville
- Greeting Card Stores, Melville
- Grocery Stores & Supermarkets, Melville
- Ground Transportation, Except Passenger, Melville
- Group Homes, Melville
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