NN, Nn, or nn may refer to:

NN/nn, Nynorsk, a Norwegian written language (ISO 639 alpha-1 code "nn"). They are sometimes used on websites to distinguish them from their counterparts Bokmål. E.g. nn.wikipedia.org vs no.wikipedia.org.

Businesses and organizations

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Places

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Science and technology

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  • Nearest neighbor (disambiguation), with several related uses in mathematics
  • Net neutrality, the principle that Internet service providers should treat all data the same
  • Neural network, a group of interconnected nerve cells or a machine-learning model inspired by one
  • Normalnull, a German height reference system preceding Normalhöhennull (NHN)
  • nn, the chemical symbol for the hypothetical element Neutronium

Other uses

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