| B&R | Backup and Recovery 
| Others |
| B&R | Backup and Restore
| Others |
| B&R | Bell and Ross
| Others |
| B/R | Bills/Receivable
| Others |
| B/R | Bleacher Report
| Others |
| BR | Babe Ratio
| Others |
| BR | Babe Ruth
| Others |
| BR | Background Retinopathy
| Others |
| BR | Balanced Recoil
| Others |
| BR | Balbiani ring
| Others |
| BR | Balls Rollers
| Others |
| BR | Banana Republic
| Others |
| BR | Band Reject
| Others |
| BR | Bandera Roja (Peruvian Communist Party)
| Others |
| BR | Bank Reconciliation
| Others |
| BR | Bankruptcy Rate
| Others |
| BR | Barnes Reinecke
| Others |
| BR | baroreceptor
| Others |
| BR | baroreflex
| Others |
| BR | Barrel Racing
| Others |
| BR | Barry Railway
| Others |
| BR | Basal Respiration
| Others |
| BR | Baseline Recovery
| Others |
| BR | Basic Rate
| Others |
| BR | Basic Region
| Others |
| BR | Baskin Robbins
| Others |
| BR | Bass Reflex
| Others |
| BR | Batch Render
| Others |
| BR | Baton Rouge
| Others |
| BR | Battle Race
| Others |
| BR | Battle Rating
| Others |
| BR | Battle Rifle
| Others |
| BR | Battle Royal
| Others |
| BR | Battle Royale
| Others |
| BR | Bayerischer Rundfunk
| Others |
| BR | Bayerischer Rundfunk (Bavarian Radio)
| Others |
| BR | Beach Road
| Others |
| BR | Bear Roast
| Others |
| BR | Beawar Rajasthan
| Others |
| BR | Bed Rest
| Others |
| BR | Bedroom Real
| Others |
| BR | Bedside Rounds
| Others |
| BR | Before Read
| Others |
| BR | Before Restart
| Others |
| BR | Before Return
| Others |
| BR | Beginning Reader
| Others |
| BR | Beginning Russian
| Others |
| BR | Ben Reuven
| Others |
| BR | Bench Rest
| Others |
| BR | Benchrest Remington
| Others |
| BR | Bend Release
| Others |
| BR | Best Regards
| Others |
| BR | Best Reply
| Others |
| BR | Best Response
| Others |
| BR | Betriebsrat
| Others |
| BR | Big Rock Point, Michigan
| Others |
| BR | Big Rod
| Others |
| BR | Bihar
| State |
| BR | Biliverdin Reductase
| Others |
| BR | Binocular Rivalry
| Others |
| BR | Biochemical Response
| Others |
| BR | Biological Response
| Others |
| BR | Biosphere Reserve
| Others |
| BR | birefringence
| Others |
| BR | Birmingham Revision (of anatomical nomenclature)
| Others |
| BR | Birth Rate
| Others |
| BR | Birthing Room
| Others |
| BR | Bit Rate
| Others |
| BR | Blanket Roll
| Others |
| BR | Blink Response
| Others |
| BR | Blocking Reaction
| Others |
| BR | Blood Reaper
| Others |
| BR | Blue Ridge
| Others |
| BR | Blue Room
| Others |
| BR | Blur
| Others |
| BR | Bob Rozakis, comic book writer and editor
| Others |
| BR | Boca Raton
| Others |
| BR | Bogues Rages
| Others |
| BR | Bohemian Rhapsody
| Others |
| BR | Bold Region
| Others |
| BR | Boliver and Rodriguez
| Others |
| BR | Bombesin Receptor
| Others |
| BR | Bombing Run
| Others |
| BR | Bone Resorption
| Others |
| BR | Bonus Room
| Others |
| BR | Book Review
| Others |
| BR | Booster Ring
| Others |
| BR | Boris Ruzic
| Others |
| BR | Bottom Right
| Others |
| BR | Bounding Rectangle
| Others |
| BR | Bounding Region
| Others |
| BR | Bourns
| Others |
| BR | Bowser Rebels
| Others |
| BR | Box Ready
| Others |
| BR | Boys Respect
| Others |
| BR | Braced and Racked
| Others |
| BR | brachioradialis
| Others |
| BR | Bradford Industrial Rail
| Others |
| BR | Bradford Industrial Rail Incorporated
| Others |
| BR | Braid Representative
| Others |
| BR | Braided Rope
| Others |
| BR | Branch Representative
| Others |
| BR | Branching Ratio
| Others |
| BR | Brandenburg
| Others |
| BR | Break Rate
| Others |
| BR | Break Rule
| Others |
| Br | Breaker
| Others |
| BR | Breaking Run
| Others |
| BR | Breast Reconstruction
| Others |
| BR | Breast Reduction
| Others |
| BR | Breathing and Relaxation
| Others |
| BR | Breathing Rate
| Others |
| BR | Breathing Reserve
| Others |
| Br | Breech (pregnancy) presentation
| Others |
| BR | Breton
| Others |
| BR | Bridge Return
| Others |
| BR | BRidge software Script file
| Others |
| BR | Bridgewater-Raynham Regional School District
| Others |
| BR | British Rail
| Others |
| BR | British Railway
| Others |
| BR | British Railways
| Others |
| BR | Bromine
| Element |
| BR | Bronchial Reactivity
| Others |
| BR | Bronchial Response
| Others |
| BR | bronchus
| Others |
| BR | Brown Root
| Others |
| Br | Brucella
| Others |
| BR | Bruder
| Others |
| BR | Bubble Renormalized
| Others |
| BR | Buchi Ramaiah
| Others |
| BR | Budget Requirement
| Others |
| BR | Budget Review
| Others |
| BR | Buffalo Ridge
| Others |
| BR | Buffered Regular
| Others |
| BR | Bug Report
| Others |
| BR | Building Recognition
| Others |
| BR | Building Report
| Others |
| BR | bulbs are
| Others |
| BR | Bulged Reflector
| Others |
| BR | Bullring
| Others |
| BR | Bumetanide-Resistant
| Others |
| BR | Bump Rail
| Others |
| BR | Bunny Rabbit
| Others |
| BR | Burgess Roll
| Others |
| BR | Burlington Resources
| Others |
| BR | Burundi Rwanda
| Others |
| BR | Business Rules
| Others |
| BR | Butadiene rubber
| Others |
| BR | Buyers Remorse
| Others |
| BR | By Report
| Others |
| BR | By Request
| Others |
| BR | By Rows
| Others |
| BR | line BReak
| Others |
| BR | Omnis7 Data file
| Others |
| BR | Polybutadiene Rubber
| Others |
| Br. | Bratsche
| Others |