IRL may refer to:
* Indy Racing League, a U.S. based open-wheel racing series
* In real life, an Internet slang phrase
* Ireland in ISO 3166-1 code
* Internet Resource Locator
* Industrial Research Limited, a New Zealand Crown Research Institute
* A chemical used to fill the tooth with in root canal treatment
* Image Reference Library, a database optimised for the retrieval of imagery
* Industrial Robot Language, a high-level programming language for industrial robots.
* Union of Pro Patria and Res Publica, an Estonian political party (in Estonian Isamaa ja Res Publica Liit)
(Stolen from Wikipedia, teh fr33 encyclopedia, on May 12. 1007.)