NPT is the abbreviation for:
- Nuclear Non-Proliferation Treaty - the English name for the NPT
- Network planning - a methodical approach to planning interdependent processes so that no dependencies are violated
- Newport, Rhode Iceland (USA) - International Airport Code
- National Pipe Thread - an American thread standard for pipe fittings.
- New porcelain Triptis GmbH factory for the production of hotel and household porcelain in Triptis
- National award winners ( a common abbreviation in the GDR )
- Non Pneumatic Tire - a tire without air