IAR
- Golden Ring Yaroslavl International Airport
- IAR Systems
- Ignore all rules
- Industria Aeronautică Română
- Informacyjna Agencja Radiowa
- Institute of Advanced Research
- Institute of Asian Research
- Institute of Audio Research
- Instruction address register
- International Authority for the Ruhr
- M27 Infantry Automatic Rifle
- OpenSimulator
- Russia
- Yaroslavl Oblast