ABR

ABR is a three-letter acronym that may refer to:
* Abercynon North railway station, a closed railway station formerly serving the village of Abercynon in the Cynon Valley, South Wales
* IATA airport code for Aberdeen Regional Airport, an airport east of Aberdeen, South Dakota, United States
* Auditory brainstem response, an electrical signal evoked from the brainstem of a human or other mammal by the presentation of a sound
* Available Bit Rate, a service used in ATM networks
* Average bitrate, the average amount of data transferred per second
* Area border router, in the Open Shortest Path First protocol
* August Burns Red, a band
* ABR is the file extension for Adobe Photoshop brushes file.
* The American Board of Radiology
* ABR, the ICAO code for Air Contractors