- Nail Salons, Schaumburg
- Nanny Services, Schaumburg
- National Government, Schaumburg
- Natural & Holistic Products, Schaumburg
- Natural Stone, Schaumburg - Suppliers & Wholesalers
- Network Communications, Schaumburg
- Network Designers, Schaumburg - Computer Networking Design & Systems
- Neurologists, Schaumburg - Neurology Doctors, Physicians & Surgeons
- Newspaper Manufacturers, Schaumburg
- Night Clubs, Schaumburg - Nightclub & Night Life
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- Non Durable Goods & Products, Schaumburg
- Noncommercial Social Research Organization, Schaumburg
- Nonresidential Building Operators, Schaumburg
- North American Restaurants, Schaumburg
- Notary Public, Schaumburg
- Novelty Gifts & Items Stores, Schaumburg
- Nurseries & Garden Centers, Schaumburg
- Nurses, Schaumburg
- Nursing Homes, Schaumburg - Skilled Nursing Facility - Personal Care Centers
- Nutritionists & Nutrition Consultants, Schaumburg - Nutrition Centers
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