IRR
Appearance
IRR is a three-letter acronym that may refer to:
- In finance, the internal rate of return
- In computer science, Interrupt Request Register, used to indicate interrupts awaiting service
- In electrical engineering, the image rejection ratio
- In computer networking, the Internet Routing Registry
- In art conservation-restoration, Infrared Reflectography
- The Individual Ready Reserve of the United States military
- The Iranian rial
- The Institute of Race Relations and its newsletter, the Independent Race and Refugee News Network
- Integra Realty Resources, the largest real estate appraisal company in the U.S.
- The Australian Incident Response Regiment
- In the United States Military, it stands for Individual Ready Reserve (sometimes referred to inactive ready reserve).
- In Sheffield, England
- In UK Law, the Ionising Radiations Regulations 1999