| BRR | Bad Response to Refrigeration 
| Others |
| BRR | Balanced Repeated Replication
| Others |
| BRR | Baldani Rowland and Richardson
| Others |
| BRR | Ballarat Road Rodders
| Others |
| BRR | Barra, UK
| Others |
| BRR | Base Running Runs
| Others |
| BRR | Belton Railroad
| Others |
| BRR | Beta Readiness Review
| Others |
| BRR | Bike Ride to Rippey
| Others |
| BRR | Bit Rate Reduction
| Others |
| BRR | Bitcoin Reference Rate
| Others |
| BRR | Black Rhino Ranger
| Others |
| BRR | Black Root Rot
| Others |
| BRR | Blending Revival Records
| Others |
| BRR | Blue Ridge Region
| Others |
| BRR | Boise Regional REALTORS
| Others |
| BRR | Book Rate of Return
| Others |
| BRR | Bootheel Regional Rail Corporation
| Others |
| BRR | Borriana / Burriana
| Others |
| BRR | Bradfield Richards Rhodes
| Others |
| BRR | Breathy Release
| Others |
| BRR | Broken Road Racing
| Others |
| BRR | Buck Rope Race
| Others |
| BRR | Budros Ruhlin Roe
| Others |
| BRR | Building Resilient Regions
| Others |
| BRR | Bull Run Run
| Others |
| BRR | Business Readiness Rating
| Others |
| BRR | Business Rockafeller Road
| Others |
| BRR | Business Rules Router
| Others |
| BRR | Buy Refurbish Refinance
| Others |
| BRR | Bylaws Resolutions And Recommend
| Others |
| BRR | Bylaws Resolutions And Recommendations
| Others |