DNU (disambiguation)

DNU or Dnu may refer to:
 * The New University Hospital (DNU), the largest single hospital in Denmark
 * DAT LT, the ICAO airline code DNU
 * ISO 639:dnu, the ISO 639-3 code for Danau language
 * Necessity and Urgency Decree (in Spanish, "Decreto de necesidad y urgencia"), a special kind of order issued by the President of Argentina
 * Dnu Huntrakul, a prominent Thai composer and chamber musician