- Games & Hobbies, Manlius
- Garment & Linen Services, Manlius
- General Business Consulting, Manlius
- General Business Services, Manlius
- General Consultants, Manlius
- General Management Consulting Services, Manlius - Management Consultants
- General Merchandise Stores, Manlius
- General Travel Agents & Agencies, Manlius
- Generators, Compressors, Pumps, Motors & Fans, Manlius
- Gifts, Cards & Stationery Stores, Manlius
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- Gold, Silver & Platinum Buyers, Sellers & Dealers, Manlius
- Golf Lessons & Instruction, Manlius
- Government, Manlius
- Grain Elevators, Manlius
- Graphic Design Services, Manlius - Graphic Designer
- Graphic Designer & Artist Services, Manlius
- Grocery Stores & Supermarkets, Manlius
- Ground Transportation, Except Passenger, Manlius
- Gun & Hunting & Fishing Clubs, Manlius
- Gutters & Downspout Cleaning & Repairing, Manlius
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