NIR

NIR or Nir may refer to:

==Science and technology== 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