| Acronym | Meaning |
| ABL | Above Base Line |
| ABL | Above Baseline |
| ABL | Acquire Before Launch |
| ABL | Acquisition before Launch (US DoD) |
| ABL | Administrative Boundary Lines |
| ABL | Advanced Baseline |
| ABL | Agrani Bank Limited (Bangladesh) |
| ABL | Airborne Laser |
| ABL | Aircraft Based Laser |
| ABL | Allegheny Ballistics Laboratory |
| ABL | Allocated Baseline |
| ABL | Allocated/Above Baseline |
| ABL | Allowable Buckling Load (transportation) |
| ABL | Ammunition Basic Load |
| ABL | Armée Belge Belgisch Léger |
| ABL | Armored Box Launcher |
| ABL | Army Battle Laboratory |
| ABL | Army Biological Labs (Frederick, MD) |
| ABL | As-Built List |
| ABL | ATLAS Basic Language |
| ABL | Atmospheric Boundary Layer |
| ABL | Atmospheric Burst Locator |
| ABL | Automated Base Locator System |
| ABL | Automatic Bootstrap Loader |