ADDL
| Acronym | Definition |
|---|---|
| ADDL | Additional |
| ADDL | Animal Disease Diagnostic Laboratory (University of the Philippines, College of Veterinary Medicine) |
| ADDL | American Double Dutch League |
| ADDL | Amyloid Beta-Derived Diffusible Ligand |
| ADDL | Aerodrome Dummy Deck Landings |