IRN may refer to:
- Input-referred noise
- Independent Radio News, a news service to commercial radio stations in the United Kingdom
- Independent Radio News (New Zealand), not affiliated with the United Kingdom company above
- International Rivers Network, a non-profit environmental organization based in California, United States
- Imperial Russian Navy, the navy of the Russian Empire
- Iran (ISO 3166-1 alpha-3 country code)
- Indian-ringnecked parakeet (abbreviated IRN), the subspecies Psittacula krameri manillensis of the rose-ringed parakeet
- Islamic Council Norway, Islamsk RÃ¥d Norge
- Italian Royal Navy, the navy of the Kingdom of Italy
This disambiguation page lists articles associated with the title IRN.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: