- Games & Hobbies, South Yarmouth
- Garage Doors & Door Operating Devices, South Yarmouth
- Garage Doors & Gates, South Yarmouth - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, South Yarmouth
- Garbage & Rubbish Removal, South Yarmouth
- Garden & Lawn Sprinkler Repair, Installation & Service, South Yarmouth
- Garment & Linen Services, South Yarmouth
- Gas Station, South Yarmouth - Service & Filling Station
- Gasoline, South Yarmouth
- General Business Consulting, South Yarmouth
- General Business Services, South Yarmouth
- General Consultants, South Yarmouth
- General Hardware Stores, South Yarmouth
- General Merchandise Stores, South Yarmouth
- General Travel Agents & Agencies, South Yarmouth
- Gift Baskets, South Yarmouth
- Gifts By Type & Occasion, South Yarmouth
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- Gifts, Cards & Stationery Stores, South Yarmouth
- Glass & Glass Products, South Yarmouth
- Glass - Auto, Float, Plate, Window & Doors, South Yarmouth
- Gold, Silver & Platinum Buyers, Sellers & Dealers, South Yarmouth
- Golf Courses, South Yarmouth
- Golf Courses - Resorts, South Yarmouth
- Golf Driving Ranges, South Yarmouth
- Golf Equipment & Supplies Stores, South Yarmouth - Golf Clubs, Balls, Carts, Bags, Apparel, Shoes & Accessories
- Golf Equipment Repair & Sales, South Yarmouth - Clubs, Carts, Bags & More
- Golf Lessons & Instruction, South Yarmouth
- Government, South Yarmouth
- Granite, South Yarmouth
- Greeting Card Stores, South Yarmouth
- Grocery Stores & Supermarkets, South Yarmouth
- Ground Transportation, Except Passenger, South Yarmouth
- Gun Repair & Services, South Yarmouth
- Guns & Gunsmith Services, South Yarmouth
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