NNA
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