| ADDL | Access Digital and Distributed Learning
| Others |
| Addl | Additional
| Others |
| ADDL | Amyloid beta-Derived Diffusible Ligand
| Others |
| ADDL | Amyloid Derived Diffusible Ligand
| Others |
| ADDL | Animal Disease Diagnostic Lab
| Others |
| ADDL | Animal Disease Diagnostic Laboratory
| Others |
| ADDL | Artifact and Design Description Language
| Others |
| ADDL | Artifact Design Description Language
| Others |
| ADDL | Associazione Dislessia Discalculia Lodi
| Others |
| ADDL | Atlanta Doubles Dart League
| Others |
| ADDL | Autism and Developmental Disorders Lab
| Others |
| ADDL | Avian Disease Diagnostic Laboratory
| Others |