IGR
# IGR

IGR may refer to:

* Iguazu International Airport serving Puerto Iguazú and the nearby falls
* IGR Iwate Ginga Railway in Iwate Prefecture, Japan
* Imperial Japanese Government Railways (or, domestically, Imperial Government Railways) of early 20th century Japan
* Indiana Guard Reserve, the state defense force of Indiana
* International Gay Rugby
* Insect growth regulator, a chemical that disrupts the growth and/or development of insects
* The Interessengemeinschaft für Rundfunkschutzrechte (IGR), a broadcasting "IP" rights interest group
   * IGR Stereo, a German standard for analogue TV stereo audio transmission claimed by the above organization.
* Intergenic region
* Integral Gamma-Ray source, a catalog based on observations by the INTEGRAL telescope
