NPD
NPD may refer to:

Companies 

 NPD Group, New York, US, a market research company
 NPD (petrol), New Zealand fuel retailer

Political parties
 National Democratic Party of Germany, a far-right party (Nationaldemokratische Partei Deutschlands)
 New Democratic Party of Canada, (Nouveau Parti Démocratique)
 New Palangdharma Party, Thailand
 New Party Daichi, Japan

Railway stations
 Nawapara Road railway station, Odisha, India (code: NPD)
 New Pudsey railway station, England (code: NPD)

Sciences 
 Narcissistic personality disorder, a drama-heavy, abusive personality style with supply dynamics
 Nitrogen–phosphorus detector, in chromatography
 Non-parental ditype, in tetrad genetic analysis
 Nuclear Power Demonstration, a reactor in Canada

Other 
 New product development
 Newark Police Department (New Jersey), US