| Abbreviation | Definition |
|---|---|
| ADNIC | Abu Dhabi National Insurance Company |
| ADNOC | Abu Dhabi National Oil Company |
| ADO | Advanced Data Objects |
| ADO | Austin Design Office |
| ADO | Autotransportes Del Oriente |
| ADOC | Abu Dhabi Oil Company |
| ADP | Advanced Distributor Products |
| ADP | Atieh Dadeh Pardaz |
| ADPC | Abu Dhabi Ports Company |
| ADPI | Analog Digital Peripherals, Inc. |
| ADR | Alternate Decisions Or Resolutions |
| ADS | Advanced Diabetes Supply |
| ADS | Amsterdam Design Studios |
| ADSC | Advanced Data Systems Corporation |
| ADSC | Alberta Dental Service Corporation |
| ADSI | Advanced Diagnostic Solutions Inc |
| ADSI | Advanced Distribution Solutions Inc |
| ADSI | Aligned Development Strategies Inc |
| ADSI | American Defense Systems Inc |
| ADSI | American Defense Systems, Inc |