- Games & Hobbies, Tonawanda
- Garage Building & Repair, Tonawanda - Carports - Garage Builders
- Garage Door Repair, Tonawanda
- Garage Doors & Door Operating Devices, Tonawanda
- Garage Doors & Gates, Tonawanda - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Tonawanda
- Garbage & Rubbish Removal, Tonawanda
- Garden & Lawn Sprinkler Repair, Installation & Service, Tonawanda
- Garment & Linen Services, Tonawanda
- Gas & Air Compressors, Tonawanda
- Gas Companies, Tonawanda
- Gas Piping Contractors, Tonawanda - Gas Pipe Installation & Repair Service
- Gas Station, Tonawanda - Service & Filling Station
- Gears, Tonawanda
- Gears & Gear Cutting, Tonawanda
- General Business Consulting, Tonawanda
- General Business Services, Tonawanda
- General Consultants, Tonawanda
- General Freight Trucking, Tonawanda - Motor Freight
- General Hardware Stores, Tonawanda
- General Management Consulting Services, Tonawanda - Management Consultants
- General Merchandise Stores, Tonawanda
- General Travel Agents & Agencies, Tonawanda
- Generators, Compressors, Pumps, Motors & Fans, Tonawanda
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- Gift Baskets, Tonawanda
- Gift Shops, Tonawanda - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Tonawanda
- Gifts, Cards & Stationery Stores, Tonawanda
- Glass & Glass Products, Tonawanda
- Glass - Auto, Float, Plate, Window & Doors, Tonawanda
- Glass Block & Architectural, Tonawanda
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Tonawanda
- Golf Courses, Tonawanda
- Golf Driving Ranges, Tonawanda
- Gospel Church, Tonawanda
- Gourmet Food Stores, Tonawanda
- Government, Tonawanda
- Granite, Tonawanda
- Graphic Design Services, Tonawanda - Graphic Designer
- Graphic Designer & Artist Services, Tonawanda
- Grease & Oil Disposal Sites, Tonawanda
- Greek Restaurants, Tonawanda
- Grinding Services, Tonawanda
- Grocery Stores & Supermarkets, Tonawanda
- Ground Transportation, Except Passenger, Tonawanda
- Gun & Hunting & Fishing Clubs, Tonawanda
- Gutters & Downspout Cleaning & Repairing, Tonawanda
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