- Nasdaq Stock Market
- National Debt
- National Labor Relations Board (NLRB)
- National Technical Information Service (NTIS)
- National Transportation Safety Board (NTSB)
- Negligence
- Negotiable Instruments
- Nepotism
- Nondurable Goods
- Nonparametric Statistics
- North American Free Trade Agreement (NAFTA)
- North American Industry Classification System (NAICS)
- North Atlantic Treaty Organization (NATO)
