| Abbreviation | Definition |
|---|---|
| ADFM | Active Duty Family Member |
| ADG | Anti-Diskriminierungs-Gesetz (German: Anti-Discrimination Law) |
| ADHOC | Allied Destructive Hackers Of Columbia |
| ADJ | ADministration of Justice |
| ADJC | Aboriginal Disability Justice Campaign |
| ADJR | Administrative Decisions (Judicial Review) Act (Commonwealth of Australia) |
| ADL | Anti Defamation League |
| ADLEA | Advance Diploma in Law Enforcement Administration |
| ADLF | American Democracy Legal Fund |
| ADLL | Advanced Diploma in Labour Law |
| ADR | Alternative Dispute Resolution |
| ADR | Amicable Dispute Resolution |
| ADR | Australian Device Regulatory |
| ADRM | Alternative Dispute Resolution Method/Mechanism. |
| ADRP | Alternative Dispute Resolution Program |
| ADSM | Ad Sectam |
| ADTC | Adult Drug Treatment Court |
| ADV | Advanced Design Vest |
| ADV | Adverse |
| ADVANCE | Avoiding Drugs Violence And Negative Choices Early |