NPD

NPD may refer to:

Psychology

• Narcissistic personality disorder, a cluster B personality disorder

Politics

• National Democratic Party of Germany, a far-right political party in Germany; after its German language name, Nationaldemokratische Partei Deutschlands
• New Democratic Party of Canada, a political party in Canada, through its French language acronym NPD, standing for Nouveau Parti Démocratique

Business

• New product development, the process of bringing a new product or service to market
• New Pudsey railway station, in England; National Rail station code NPD
• NPD Group, a sales and market research company (formerly National Purchase Diary)

Chemistry

• Nitrogen Phosphorus Detector, a detector used in chromatography

Genetics

• Non-parental ditype, in tetrad analysis (see Tetrad_(genetics))

Nuclear

• Nuclear Power Demonstration, an early power-producing nuclear reactor in Canada