| ADDL | Association of Drug Detection Laboratories | 药物检测实验室协会 |
| ADDL | Additional | 附加的 |
| ADDL | Animal Disease Diagnostic Laboratory (University of the Philippines, College of Veterinary Medicine) | 动物疾病诊断实验室（菲律宾大学兽医学院） |
| ADDL | Amyloid Beta-Derived Diffusible Ligand | 淀粉样β衍生扩散配体 |
| ADDL | American Double Dutch League | 美国双荷兰联赛 |
| ADDL | Artifact Design Description Language | 工件设计描述语言 |
| ADDL | Amyloid Derived Diffusible Ligand | 淀粉样衍生扩散配体 |
| ADDL | Animal Disease Diagnostic Laboratory | 动物疾病诊断实验室 |