- Aboriginal Organizations, Hay River
- Accounting Tax & Computer Consultants, Hay River
- Accounting, Auditing & Bookkeeping Services, Hay River
- Additional Educational Opportunities, Hay River
- Adult & Geriatric Social Services, Hay River
- Advertising, PR & Marketing Services, Hay River
- Agriculture, Hay River
- Air Transportation, Except Passenger, Hay River
- Aircraft Charter, Rental & Leasing Service, Hay River
- Aircraft Dealers & Distributors, Hay River
- Airlines, Hay River
- Airport, Hay River
- Alcohol & Drug Prevention Education, Hay River
- Ambulance Department, Hay River
- Amusements & Attractions, Hay River
- Anglican Churches, Hay River
- Animal Shelters & Protection Agencies, Hay River
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- Apartments & Buildings, Hay River
- Arts & Culture, Hay River
- Asbestos Removal & Abatement Services, Hay River
- Asian Restaurants, Hay River
- Athletic Facilities & Services, Hay River
- Attorneys & Lawyers, Hay River
- Attorneys & Lawyers, Hay River
- ATV & RV Dealers, Hay River - All-Terrain & Recreational Vehicles
- Auto Batteries, Hay River - Truck, Car Battery, etc
- Auto Body Repair & Paint Shop, Hay River - Auto Body Shop
- Auto Parts, Accessories, Equipment & Supplies, Hay River
- Auto Repair Shops & Maintenance Service, Hay River - Auto Mechanic & Car Repair Shops
- Auto Services, Hay River
- Auto Wheels, Hay River
- Auto, Car & Truck Accessories, Hay River
- Automotive Access & Equipment Manufacturers, Hay River
- Aviation & Avionics Sales, Hay River
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