AVR may refer to:

Railroad

Allegheny Valley Railroad The Allegheny Valley Railroad is a class III railroad that operates in Western Pennsylvania, and is owned by Carload Express, Carload Express, Inc. AVR acts as a feeder line connecting its many and varied customers to Class I railroads such as ...

, shortline railroad in Pennsylvania, U.S. *

Aroostook Valley Railroad The Aroostook Valley Railroad was a railroad that operated between Presque Isle and Caribou, Maine from the early 1900s to 1996. The railroad operated maroon interurban cars with grey roofs on 1200 volt DC power until 1945. History Arthur R. Go ...

, a defunct railroad in Maine, U.S. *

Assiniboine Valley Railway Assiniboine Valley Railway (AVR) was a private 1:8th (1.6" to the foot) scale ridable miniature railway located in the community of Charleswood, Manitoba, Charleswood near Assiniboine Park in Winnipeg, Manitoba, Canada. The track gauge is . Constr ...

, a minimum gauge railway in Winnipeg, Canada *

Avon Valley Railway The Avon Valley Railway (AVR) is a three-mile-long heritage railway based at Bitton station in South Gloucestershire, England, between Bristol and Bath and is operated by a local group: The Avon Valley Railway Company Ltd. The railway follows th ...

, a heritage railway in the United Kingdom

Radio

Aboriginal Voices Radio Aboriginal Voices Radio Network (rebranded as Voices Radio in 2014) was a Canadian radio network, which primarily broadcast music programming and other content of interest to aboriginal people. As of June 2015, the network operated stations in To ...

, an Aboriginal Canadian national radio network * Annapolis Valley Radio, a country station located in Kentville, Nova Scotia

Electronics

AVR microcontrollers AVR is a family of microcontrollers developed since 1996 by Atmel, acquired by Microchip Technology in 2016. These are modified Harvard architecture 8-bit RISC single-chip microcontrollers. AVR was one of the first microcontroller families to u ...

, 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 Augmented reality (AR) is an interactive experience that combines the real world and computer-generated content. The content can span multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory. AR can be de ...

and

virtual reality Virtual reality (VR) is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games), educ ...

interactive experiences * Automatic

voltage regulator A voltage regulator is a system designed to automatically maintain a constant voltage. A voltage regulator may use a simple feed-forward design or may include negative feedback. It may use an electromechanical mechanism, or electronic components ...

Other uses

Armed violence reduction The concept of armed violence reduction (AVR) has gained significant in importance after the Geneva Declaration on Armed Violence and Development, 2006 Geneva Declaration on Armed Violence and Development. According to OECD, more than 740,000 people ...

Aortic valve replacement Aortic valve replacement is a procedure whereby the failing aortic valve of a patient's heart is replaced with an artificial heart valve. The aortic valve may need to be replaced because: * The valve is leaky (aortic insufficiency, also known as ...

* Automatic

voter registration In electoral systems, voter registration (or enrollment) is the requirement that a person otherwise eligible to vote must register (or enroll) on an electoral roll, which is usually a prerequisite for being entitled or permitted to vote. The ru ...

* Avacyn Restored *

AVR reactor The AVR reactor (german: Arbeitsgemeinschaft Versuchsreaktor) was a prototype pebble-bed reactor, located immediately adjacent to Jülich Research Centre in West Germany, constructed in 1960, grid connected in 1967 and shut down in 1988. It was a ...

('), a German prototype pebble bed reactor *

Avirulence gene The gene-for-gene relationship was discovered by Harold Henry Flor who was working with rust (''Melampsora lini'') of flax (''Linum usitatissimum''). Flor showed that the inheritance of both resistance in the host and parasite ability to cause dis ...

, "Avr" * Auxiliary Vessel, Rescue or Aircraft Vessel, Rescue * Lead augmented vector right (aVR), a voltage difference in

electrocardiography Electrocardiography is the process of producing an electrocardiogram (ECG or EKG), a recording of the heart's electrical activity. It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the hear ...

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