PNN

PNN may refer to:

National Natural Parks System (Colombia) ({{langx|es|Unidad Administrativa Especial del Sistema de Parques Nacionales Naturales de Colombia|links=no}} PNN)
Parliamentary and News Network, Australia
Princeton Municipal Airport (Maine), USA (by IATA code)
Probabilistic neural network, in machine learning
Pinin, a protein encoded by the PNN gene
Hagahai language (ISO 639 code: pnn)
VOA-PNN, Voice of America Persian News Network
Perineuronal net, in the brain
Potsdamer Neueste Nachrichten, newspaper in Potsdam, Germany

See also