NIR or Nir may refer to:

Science and technology

Near-infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of Light, visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from ...

, a region within the infrared part of the electromagnetic radiation spectrum *

Near-infrared spectroscopy Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from 780 nm to 2500 nm). Typical applications include medical and physiological diagnostics and research inc ...

, a spectroscopic method that uses the near-infrared region (from 780 nm to 2500 nm). *

National Identity Register The Identity Cards Act 2006 (c. 15) was an Act of the Parliament of the United Kingdom that was repealed in 2011. It created national identity cards, a personal identification document and European Economic Area travel document, linked to a ...

, a former UK database * National Internet registry, which coordinates IP address and other resource allocation * NIR, proposed variation of the

SECAM SECAM, also written SÉCAM (, ''Séquentiel de couleur à mémoire'', French for ''color sequential with memory''), is an analog color television system that was used in France, some parts of Europe and Africa, and Russia. It was one of th ...

colour television system in the Soviet Union * ''Numéro d'inscription au répertoire national d'identification des personnes'' and ''numéro d'inscription au répertoire'', national identity numbers; see

INSEE code The INSEE code is a numerical indexing code used by the French National Institute for Statistics and Economic Studies (INSEE) to identify various entities, including communes and '' départements''. They are also used as national identificati ...

Places

* Nir, Iran (disambiguation), several places in Iran *

Negros Island Region The Negros Island Region ( hil, Rehiyon sang Pulo sang Negros; ceb, Rehiyon sa Pulo sa Negros), also abbreviated and officially designated as NIR (unofficially ''Region XVIII''), was a short-lived administrative region in the Philippines which ...

, one of the 18 regions of the Philippines *

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...

(FIFA country code: NIR, ISO 3166 code: GB-NIR), a part of the United Kingdom *

Ness Islands Railway The Ness Islands Railway is a gauge miniature railway in Inverness, Scotland, opened in 1983. Overview Operating around a site in Whin Park, near the Ness Islands, an area popular for recreation amongst tourists and the local population, the ...

, a miniature railway in scotland

Other uses

* Nir (name), a Hebrew given name and surname *

Northern Ireland Railways NI Railways, also known as Northern Ireland Railways (NIR) ( ga, Iarnród Thuaisceart Éireann); and for a brief period Ulster Transport Railways (UTR), is the railway operator in Northern Ireland. NIR is a subsidiary of Translink, whose paren ...

, the railway operator in Northern Ireland *

Rate of natural increase In Demography, the rate of natural increase (RNI), also known as natural population change, is defined as the birth rate minus the death rate of a particular population, over a particular time period. It is typically expressed either as a number ...

, a demographic metric of population increase

Science and technology

Places

Other uses

See also