| Acronym | Meaning |
| BLA | Balochistan Liberation Army |
| BLA | Base Level Assessment |
| BLA | Baseline Agreement |
| BLA | Basic Living Allowance (various organizations) |
| BLA | Biologic License Application (US FDA) |
| BLA | Biologics License Agreement (US FDA) |
| BLA | Boating Law Administrator |
| BLA | Body Loading Assembly (weapons) |
| BLA | Boundary Line Adjustment (city planning) |
| BLA | British Liberation Army (World War II unit) |
| BLA | Bureau of Legislative Affairs |