- Games & Hobbies, Pittsford
- Garage, Door & Window Products, Pittsford
- Garment & Linen Services, Pittsford
- Gas Station, Pittsford - Service & Filling Station
- Gastroenterologists, Pittsford - GI Doctors, Physicians & Surgeons (Gastroenterology)
- General Business Consulting, Pittsford
- General Business Services, Pittsford
- General Consultants, Pittsford
- General Electric/Ge Heat Equipment, Pittsford
- General Management Consulting Services, Pittsford - Management Consultants
- General Merchandise Stores, Pittsford
- General Travel Agents & Agencies, Pittsford
- Gifts, Cards & Stationery Stores, Pittsford
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- Glass, Plastic & Rubber Working Machinery, Pittsford
- Golf Clubs Private, Pittsford
- Golf Courses, Pittsford
- Government, Pittsford
- Government And Administration Attorneys & Lawyers, Pittsford
- Government And Administration Attorneys & Lawyers, Pittsford
- Government And Administration Lawyers & Attorneys, Pittsford
- Graphic Design Services, Pittsford - Graphic Designer
- Graphic Designer & Artist Services, Pittsford
- Greek Restaurants, Pittsford
- Ground Transportation, Except Passenger, Pittsford
- Gun Repair & Services, Pittsford
- Guns & Gunsmith Services, Pittsford
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