NPN
NPN may refer to:
{{TOC right}}
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
{{disambiguation}}