- Garbage & Rubbish Removal, Haliburton
- Garment & Linen Services, Haliburton
- Gas Station, Haliburton - Service & Filling Station
- Gazebo Builders, Haliburton - Installation, Repair & Maintenance Services
- General Business Consulting, Haliburton
- General Business Services, Haliburton
- General Consultants, Haliburton
- General Merchandise Stores, Haliburton
- General Travel Agents & Agencies, Haliburton
- Generators, Compressors, Pumps, Motors & Fans, Haliburton
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- Geothermal Heating & Cooling Contractors, Haliburton - Geothermal HVAC - Installation
- Gift Shops, Haliburton - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Haliburton
- Glass & Glass Products, Haliburton
- Glass - Auto, Float, Plate, Window & Doors, Haliburton
- Golf Courses, Haliburton
- Government, Haliburton
- Grocery Stores & Supermarkets, Haliburton
- Ground Transportation, Except Passenger, Haliburton
- Gutter & Flashing Contractors, Haliburton - Metal - Copper Flashing - Gutter Cleaning & Repair Services
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