AVR
AVR may refer to:
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Railroad
- Allegheny Valley Railroad, shortline railroad in Pennsylvania, U.S.
- Aroostook Valley Railroad, a defunct railroad in Maine, U.S.
- Assiniboine Valley Railway, a minimum gauge railway in Winnipeg, Canada
- Avon Valley Railway, a heritage railway in the United Kingdom
Radio
- Aboriginal Voices Radio, an Aboriginal Canadian national radio network
- Annapolis Valley Radio, a country station located in Kentville, Nova Scotia
Electronics
- AVR microcontrollers, a family of microcontrollers originally developed by Atmel, now part of Microchip Technology
- Audio/video receiver, a home theater electronic component
- Acronym for augmented reality and virtual reality interactive experiences
- Automatic voltage regulator
Other uses
- Armed violence reduction
- Aortic valve replacement
- Automatic voter registration
- Avacyn Restored
- AVR reactor (Script error: No such module "Lang".), a German prototype pebble bed reactor
- Avirulence gene, "Avr"
- Auxiliary Vessel, Rescue or Aircraft Vessel, Rescue
- Lead augmented vector right (aVR), a voltage difference in electrocardiography