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