IRG
IRG stands for:
- Law on International Mutual Legal Assistance in Criminal Matters (Germany)
- Ideographic Rapporteur Group (see Han standardization )
- Infrastructure Reflection Group
- Central Swiss radio and television company
- International Rainbow Fish Society
- International Crude Steel Community , see International Steel Cartel
- International Rosenzweig Society
- Iranian Naft Airlines , an Iranian airline (ICAO code)
- Israelite religious community
