| Acronym | Definition |
|---|
| NPD | Narcissistic Personality Disorder |
| NPD | New Product Development |
| NPD | Nouveau Parti Démocratique (Canada) |
| NPD | Nationaldemokratische Partei Deutschlands (National Democratic Party of Germany) |
| NPD | Norwegian Petroleum Directorate |
| NPD | Niemann-Pick Disease |
| NPD | Nippon Parking Development Co., Ltd. (Japan) |
| NPD | Novell Printer Definition |
| NPD | Negative Plit Duplication |
| NPD | NASA Policy Directive |
| NPD | Nuclear Protein Database (UK) |
| NPD | Non-Private Dwelling (Australia and New Zealand) |
| NPD | National Preparedness Directorate (US FEMA) |
| NPD | No Performance Determined |
| NPD | Nitrogen Phosphorous Detector |
| NPD | Natural Product Discovery |
| NPD | National Pollution Discharge Elimination System |
| NPD | National Purchase Diary |
| NPD | Neutral Particle Detector |
| NPD | National Pig Development |
| NPD | Network Probe Daemon |
| NPD | Needlestick-Prevention Device (healthcare) |
| NPD | Newcastle Police Department (various locations) |
| NPD | Nuclear Power Development |
| NPD | Noise-Power-Distance (FAA Integrated Noise Model) |
| NPD | Nashville Police Department |
| NPD | North Polar Disorder (Christmas) |
| NPD | Non-Proliferation and Disarmament (Fund) |
| NPD | Nominal Percent Defective (US NASA) |
| NPD | New Product Dynamics |
| NPD | Names and Presence Database |
| NPD | No Pay Due (US Army Finance) |
| NPD | National Police Department |
| NPD | NASA Policy Documents |
| NPD | NASA Program Directive |
| NPD | Normal Photoelectron Diffraction |
| NPD | Neutron Powder Diffractometer |
| NPD | Names and Presence Directory (instant message systems) |
| NPD | No Perfumes or Dyes |
| NPD | Navy Procurement Directive |
| NPD | Nominal Pipe Diameter (structural engineering) |
| NPD | Null Packet Deletion (DVB standard) |
| NPD | Number Plan Digit |
| NPD | Normal Place of Duty |
| NPD | Niskayuna Police Department |
| NPD | Northville Police Department |
| NPD | Name & Presence Detection (instant messenging networks) |
| NPD | Next Payment Due |
| NPD | Non-Payment Disconnect (telecommunications industry) |
| NPD | Nutley Police Department (Nutley, NJ) |