Look up NIR in Wiktionary, the free dictionary.

NIR or Nir may refer to:

• Near-infrared, a region within the infrared part of the electromagnetic radiation spectrum
• Near-infrared spectroscopy, a spectroscopic method that uses the near-infrared region (from 780 nm to 2500 nm).
• National Identity Register, a former UK database
• National Internet registry, which coordinates IP address and other resource allocation
• NIR, proposed variation of the SECAM 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

• Nir, Iran (disambiguation), several places in Iran
• Negros Island Region, one of the 18 regions of the Philippines
• Nigeria, UNDP country code
• Northern Ireland (FIFA country code: NIR, ISO 3166 code: GB-NIR), a part of the United Kingdom
• Ness Islands Railway, a miniature railway in Scotland

• Nir (name), a Hebrew given name and surname
• Northern Ireland Railways, the railway operator in Northern Ireland
• Rate of natural increase, a demographic metric of population increase

• NIRS (disambiguation)
• All pages with titles containing NIR

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