{{Wiktionary|NN}} '''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. {{tocright}}
==Businesses and organizations== *Nationale-Nederlanden, a Dutch insurance company commonly referred to as NN * Netroots Nation, a political convention for American progressive activists * Nevada Northern Railway (reporting mark NN) * Norilsk Nickel, а metallurgical and mining company * VIM Airlines (IATA airline designator NN) * Nigerian Navy, A part of the armed forces of Nigeria * New Hope (Polish: {{lang|pl|Nowa Nadzieja}}), a polish far right party
==Places== * NN postcode area, UK, for areas of Northamptonshire, England * Nizhniy Novgorod, a Russian city/major trading center * Newport News, a city in Virginia, United States
==Science and technology== * 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== * N. N., a pseudonym of 18th-century Italian priest Camillo Almici * N. N., pseudonym of Russian economist Sergei Prokopovich * ''NN'' (film), a 2014 Peruvian film * {{angbr|'''nn'''}} is a digraph, see {{section link|List of Latin-script digraphs|N}} * Ñ, a letter in Spanish, originally derived from the written "nn" * Double net lease, a type of lease used for commercial real estate * Nomen nescio (Latin for "no name"), a person whose name is unknown *NN, the production code for the 1967 ''Doctor Who'' serial ''The Abominable Snowmen'' *Nick Nurse, head coach of the NBA's Toronto Raptors *Nintendo Network, a discontinued Nintendo service
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