| Acronym | Definition |
|---|
| ADDC | Automatic Data Direction Control (computer hardware) |
| ADDC | Abu Dhabi Distribution Company (Abu Dhabi, United Arab Emirates) |
| ADDC | Active Directory Domain Controller |
| ADDC | Association of Desk and Derrick Clubs (est. 1949) |
| ADDC | Aeronautical Design and Development Centre (India) |
| ADDC | Add with Carry (microprocessor instruction) |
| ADDC | Albemarle Downtown Development Corporation (North Carolina) |
| ADDC | Air Defense Direction Center |
| ADDC | Abridged Dewey Decimal Classification |
| ADDC | Ammonium Diethyldithiocarbamate (acid) |