NPM may stand for: Organizations National Postal Museum (since 1993), a museum in Washington, D.C., United States National Palace Museum, a museum in Taipei, Taiwan npm, Inc., a software development and hosting company based in California, United States NPM/CNP (Compagnie Nationale à Portefeuille SA), a Belgian non-listed holding company New People's Militia in Manipur, India Technology npm (software), the default package manager for the JavaScript runtime environment Node.js Network performance management Nintendo Power magazine, a video game magazine Other New Public Management, a management doctrine for governments Nils Petter Molvær (born 1960), Norwegian jazz trumpeter, also branded NPM since 2008 Net profit margin, a measure of profitability