- National Bibliography of New Books
- National Biosafety Committee of Agricultural Genetically Modified Organisms
- National bond guaranteed on import surtax
- national bonds
- National Book Award
- National Book Design Art Exhibition
- National Book Expo
- National Books Museum of China
- National Broadcasting Company
- National Broadcasting Company， NBC
- National Broadcasting Services of Thailand
- National Bureau of Corruption Prevention
- National Bureau of Economic Research
- National Bureau of Standards
- National Bureau of Statistics of China
- national business cycle analysis
- National Calligraphy and Seal Carving Exhibition
- National Calligraphy and Seal Carving Exhibition for Young and Middle-aged Artists
- National Campaign for China's Top Ten Museum Exhibitions
- National Canal Museum
- national capitalism of the transition period in China
- National Center for Agricultural Bio-safety Sciences
- National Center for Atmospheric Research(US)
- National Center for Biotechnology Information
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention，NCNCD