- Nail Salons, Gatineau
- National Government, Gatineau
- Natural & Holistic Products, Gatineau
- Natural Gas Appliances & Equipment, Gatineau
- Natural Products Wholesale & Manufacturers, Gatineau
- Natural Stone, Gatineau - Suppliers & Wholesalers
- Naturalizer Shoes, Gatineau
- Naturopathic Alternative Medicine, Gatineau
- Naturopathic Doctors, Gatineau - Naturopathic Medicine Physicians
- Naturopathic Practitioners, Gatineau
- News Service, Gatineau - News Syndicates
- Newspaper Manufacturers, Gatineau
- Night Clubs, Gatineau - Nightclub & Night Life
- Noise Measuring Equipment, Gatineau
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- Non Durable Goods & Products, Gatineau
- Non Prescription Medicine, Gatineau
- Non-Denominational Churches, Gatineau
- Nonclay Refractories, Gatineau
- Noncommercial Social Research Organization, Gatineau
- Nonresidential Building Operators, Gatineau
- North American Restaurants, Gatineau
- Notary Public, Gatineau
- Numbering Machines, Gatineau
- Nurseries & Garden Centers, Gatineau
- Nurses, Gatineau
- Nursing Homes, Gatineau - Skilled Nursing Facility - Personal Care Centers
- Nutritionists & Nutrition Consultants, Gatineau - Nutrition Centers
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