AVR may refer to any of the following:
Short for automatic voltage regulator, AVR is a hardware device used to maintain a voltage to electronic devices.
Short for automatic voice recognition, AVR is the ability of a computer or other electronic devices to identify and understand human voice.
Short for automatic voice response, AVR is a computer generated or prerecorded response activated on command.
Biometrics, Computer abbreviations, Power terms, Sound terms, UPS, Voice recognition