- Gas Companies, Royston
- Gas Station, Royston - Service & Filling Station
- General Business Services, Royston
- General Hardware Stores, Royston
- General Merchandise Stores, Royston
- Generator Sales & Rental, Royston - Contractors Supplies & Equipment
- Generators, Compressors, Pumps, Motors & Fans, Royston
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- Gifts, Cards & Stationery Stores, Royston
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Royston
- Golf Courses, Royston
- Government, Royston
- Grocery Stores & Supermarkets, Royston
- Ground Transportation, Except Passenger, Royston
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