NNA stands for:

  • National numbering agency, the relevant national authority which is responsible for the allocation of ISIN
  • The IATA code for the airport of Kenitra in Morocco, see Liste_der_IATA codes / N # NN
  • National Newspaper Association, Association of American newspapers
  • National Notary Association, American Association of Notaries
  • Alfred Toepfer Academy for Nature Conservation ( formerly called North German Academy for Nature Conservation )
  • Disambiguation
  • Abbreviation