| Abbreviation | Definition |
|---|---|
| ADCA | Aurora Denver Cardiology Associates |
| ADCC | Abu Dhabi Construction Company |
| ADCC | Aviation Data Communication Corp |
| ADCL | Amaravati Development Corporation Ltd |
| ADCO | Abu Dhabi Company for Onshore |
| ADCU | Application Development Customer Unit |
| ADDB | AddBack Corporation |
| ADDB | AddBlack Corporation |
| ADDC | Abu Dhabi Distribution Company |
| ADDC | Albemarle Downtown Development Corporation |
| ADDC | Arnouse Digital Devices Corp |
| ADDG | Atlanta Delphi Developers Group |
| ADDTC | Alzheimers Disease Diagnostic and Treatment Centre |
| ADE | Atlantis Diesel Engine |
| ADEA | American Developing Employers Association |
| ADEB | Arntzen de Besche Advokatfirma AS |
| ADEFI | Age Dominicana de Empresas Financieras, Inc. |
| ADEMCO | Alarm Device Equipment Manufacturing Company |
| ADESA | Automobile Dealer Exchange Services of America |
| ADF | Au Dragon Forg (Groupe ADF) |