NNA may refer to:

Kenitra Air Base, Morocco (IATA code) National News Agency, the official news agency of the Lebanese government National Newspaper Awards, for Canadian journalism National Newspaper Association, an American organization for community newspapers National Notary Association, an American organization for notaries public National numbering agency for International Securities Identifying Number A neural network accelerator, a specialised hardware computer system to speed up artificial intelligence or machine learning applications Nissan North America, Inc., a subsidiary of Nissan Motor Corporation