NPPD

NPPD may refer to:
 * New Product and Process Development
 * Nebraska Public Power District
 * National Protection and Programs Directorate
 * Nitrophenyl pentadienal (5-(4-nitrophenyl)-2,4-pentadienal), colloquially known as 'spydust', a chemical compound used as a tagging agent by the KGB during the Cold War Soviet era