NNA
NNA stands for:
- National numbering agency , the respective national body that is responsible for assigning the international securities identification number (ISIN)
- the IATA code for the airport of Kenitra in Morocco , see list of IATA codes / N # NN
- National Newspaper Association , American Association of Newspapers
- National Notary Association , American Association of Notaries
- Alfred Toepfer Academy for Nature Conservation (formerly called North German Nature Conservation Academy )
- National News Agency , Lebanese news agency