Find the word definition


ONP or Onp may refer to:

  • Olympic National Park, a U.S. National Park in Washington State
  • Ortho-nitrophenol, a chemical substance, created by the hydrolization of Ortho-nitrophenyl-β-galactoside
  • Newport Municipal Airport (Oregon), a general aviation airport in Newport, Oregon
  • One of the Enochian angels
  • One Nation (Australia), an Australian political party
  • ONP (notation) (Polish), another name for Reverse Polish notation (RPN) sometimes used