- Nail Salons, Long Island City
- National Government, Long Island City
- National Guard, Long Island City
- National Military, Long Island City
- Neckwear Manufacturers Supplies, Long Island City
- Nets & Nettings, Long Island City
- Network Communications, Long Island City
- News Service, Long Island City - News Syndicates
- Newspaper Manufacturers, Long Island City
- Newspaper Television & Radio Professionals, Long Island City
- Night Clubs, Long Island City - Nightclub & Night Life
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- Non Durable Goods & Products, Long Island City
- Noncommercial Social Research Organization, Long Island City
- Nonresidential Building Operators, Long Island City
- North American Restaurants, Long Island City
- Notary Public, Long Island City
- Novelty, Souvenir & Gift Shops, Long Island City
- Nurseries & Garden Centers, Long Island City
- Nurses, Long Island City
- Nursing Homes, Long Island City - Skilled Nursing Facility - Personal Care Centers
- Nutritionists & Nutrition Consultants, Long Island City - Nutrition Centers
- Nuts, Bolts & Other Miscellaneous Metal Fasteners, Long Island City
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