- Games & Hobbies, Mont Royal
- Games Toys & Childrens Vehicles Manufacturers, Mont Royal
- Garbage & Rubbish Removal, Mont Royal
- Garment & Linen Services, Mont Royal
- Gas Station, Mont Royal - Service & Filling Station
- Gemologists & Jewelers, Mont Royal
- General Business Consulting, Mont Royal
- General Business Services, Mont Royal
- General Consultants, Mont Royal
- General Freight Trucking, Mont Royal - Motor Freight
- General Hardware Stores, Mont Royal
- General Management Consulting Services, Mont Royal - Management Consultants
- General Merchandise Stores, Mont Royal
- General Travel Agents & Agencies, Mont Royal
- Generators, Compressors, Pumps, Motors & Fans, Mont Royal
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- Gift Shops, Mont Royal - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Mont Royal
- Gifts Wholesale & Retail, Mont Royal
- Gifts, Cards & Stationery Stores, Mont Royal
- Gloves Retail, Mont Royal
- Golf Courses, Mont Royal
- Golf Equipment & Supplies Stores, Mont Royal - Golf Clubs, Balls, Carts, Bags, Apparel, Shoes & Accessories
- Government, Mont Royal
- Granite, Mont Royal
- Graphic Design Services, Mont Royal - Graphic Designer
- Graphic Designer & Artist Services, Mont Royal
- Grocery Stores & Supermarkets, Mont Royal
- Ground Transportation, Except Passenger, Mont Royal
- Gutters & Downspout Cleaning & Repairing, Mont Royal
- Gymnastic Centers, Mont Royal
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