title: NPN
text: # NPN
  
  NPN may refer to:
  
  ## Science and technology
  
  * Next Protocol Negotiation, in computer networking
  * Non-protein nitrogen, an animal feed component
  * NPN transistor
  * Normal Polish notation, in mathematics
  
  ## Organisations
  
  * National Party of Nigeria, a former political party
  * New Politics Network, a UK think tank
  
  ## Other uses
  
  * Natural Health Product Number, required by the Canadian Natural Health Products Directorate
  