AVR

AVR may refer to:

• Aboriginal Voices Radio, an Aboriginal Canadian national radio network
• Allegheny Valley Railroad, shortline railroad in Pennsylvania, U.S.
• Annapolis Valley Radio, a country station located in Kentville, Nova Scotia
• Aortic valve replacement
• Armed violence reduction
• Assiniboine Valley Railway, a minimum gauge railway in Winnipeg, Canada
• Atmel AVR, a family of microcontrollers
• Automatic voltage regulator
• Automatic Volume Recognition in OS/360 and successors
• AV receiver
• Avacyn Restored
• Avon Valley Railway, a heritage railway in the United Kingdom
• AVR reactor, a German prototype pebble bed reactor
• Video file used by certain set-top boxes which use MPEG transport stream (TS) as video codec
• Aviator, a pilot of an airplane or other heavier-than-air aircraft

aVR may refer to:

• Lead augmented vector right (aVR), a voltage difference in electrocardiography