ABR

Abr or ABR may refer to:

Technology

 * 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
 * Adaptive bit rate, a method of video transmission through the Internet
 * Anaerobic baffled reactor, a type of decentralized wastewater system

Transport

 * Abercynon North railway station, a closed railway station formerly serving the village of Abercynon in the Cynon Valley, South Wales
 * ABR, IATA code for Aberdeen Regional Airport, an airport east of Aberdeen, South Dakota, United States
 * ABR, ICAO designation for ASL Airlines Ireland, a freight airline
 * Athens Line, a railroad operating in the U.S. state of Georgia

Other uses

 * Abr, a village in Iran
 * Accredited Buyer Representative, a designation of the National Association of Realtors
 * Abron dialect, a major dialect of the Akan language of Central Ghana
 * Addison Brown (1830–1913), American jurist and botanist (standard author abbreviation: A. Br.)
 * American Board of Radiology
 * Auditory brainstem response, an electrical signal evoked from the brainstem of a human or other mammal
 * August Burns Red, a metalcore band from Lancaster, Pennsylvania
 * Australian Biblical Review, academic journal
 * Australian Book Review, a literary magazine
 * Australian Business Register, government body tasked with issuing and maintaining Australian Business Numbers (ABNs)