| Acronym | Definition |
|---|
| BART | Bay Area Rapid Transit (San Francisco, CA) |
| BART | Baronet (title of nobility below baron) |
| BART | Best Available Retrofit Technology |
| BART | Benchmark for Animated Ray Tracing |
| BART | Bootable Antivirus and Recovery Tools |
| BART | Bandwidth Available in Real-Time (networks) |
| BART | Biological Activity Reaction Test |
| BART | Balloon Analog Risk Task |
| BART | Bay Area Rural Transit (Ashland, WI) |
| BART | Bootable Antivirus Recovery Tool (software) |
| BART | Branson Area Regional Tourism (Branson, MO) |
| BART | Basic Arrhythmia Recognition and Treatment (certification) |
| BART | Big Ass Red Truck (slang for a fire truck) |
| BART | Brain Attack Response Team |
| BART | Biomedical and Robotics Technology (Lab; Mahidol University, Thailand) |
| BART | Billing and Analysis Reporting Tool (NASA) |
| BART | Butterfly Analysis and Review Test |
| BART | Basic Application Run Time (IBM, OS/2) |