| BAR | Bachelor of Arts in Religion 
| Others |
| BAR | Backbone Access Router
| Others |
| BAR | Backward Adaptive Re-Encoding
| Others |
| BAR | Bandwidth Allocation Request
| Others |
| BAR | Bangor and Aroostook Railroad (Montreal, Maine and Atlantic Railway)
| Others |
| BAR | Bangor and Aroostook Railroad Company
| Others |
| BAR | Bar & Alcohol Room
| Others |
| BAR | Bar and Restaurant
| Others |
| BAR | Barbiturates
| Others |
| BAR | Barchetta
| Others |
| BAR | Barometric Pressure Solenoid
| Others |
| BAR | Barrister (Bar Exam)
| Others |
| BAR | Base Address Register
| Others |
| BAR | Bay Area Roadsters
| Others |
| BAR | Be Always Ready
| Others |
| BAR | Beer & Alcohol Room
| Others |
| BAR | Beer and Alcohol Room
| Others |
| BAR | Belfort Auto Retro
| Others |
| BAR | Best Available Rate
| Others |
| BAR | Beverage Alcohol for Restaurants
| Others |
| BAR | Beverage Alcohol Resource
| Others |
| BAR | Beware Alcohol Run
| Others |
| BAR | Beyond All Recognition
| Others |
| BAR | Beyond All Repair
| Others |
| BAR | Bigger Add Replace
| Others |
| BAR | Billing Adjustment Request
| Others |
| BAR | Binary Analysis Research
| Others |
| BAR | Black Angel And Reynolds
| Others |
| BAR | Bleed Air Regulator
| Others |
| BAR | Board Agenda Request
| Others |
| BAR | Bobcats Assume Responsibility
| Others |
| BAR | Body Alarm Reaction
| Others |
| BAR | Bogus Architectural Rift
| Others |
| BAR | Bright, Alert and Responsive
| Others |
| BAR | Bright, Alert, and Responsive
| Others |
| BAR | Bringing About Reform
| Others |
| BAR | British Accredidation Registry
| Others |
| BAR | British Accreditation Registry
| Others |
| BAR | British Accreditation Research
| Others |
| BAR | British Accredited Registry
| Others |
| BAR | British American Racing
| Others |
| BAR | British Association of Removers
| Others |
| BAR | Broadband Access Router
| Others |
| BAR | Broadcast Advertisers Report
| Others |
| BAR | Broker Archive
| Others |
| BAR | Brown And Root
| Others |
| BAR | Browning Automatic Riffle
| Others |
| BAR | Browning Automatic Rifle
| Others |
| BAR | Browning Automatic Rifleman
| Others |
| BAR | Bureau of Automotive Repair
| Others |
| BAR | Buy A Rum
| Others |
| BAR | dBASE Application Generator horizontal BAR menu object file
| Others |
| BAR | FC Bayern Munich
| Others |
| BAR | Unix BAR archive Compressed file archive
| Others |
| Bar. | Baryton
| Others |