| ADDD | A Depository of Development Documents 
| Others |
| ADDD | Accidental Death Dismemberment and Disability
| Others |
| ADDD | Accidental Death, Dismemberment, and Disability
| Others |
| ADDD | African Diaspora for Democracy and Development
| Others |
| ADDD | Animal Defined Daily Dosages
| Others |
| ADDD | Archive Document Display and Disseminate
| Others |
| ADDD | Archive, Document, Display, and Disseminate
| Others |
| ADDD | Assistant Director for Detention and Deportation
| Others |
| ADDD | Atmospheric Double Drum Dryer
| Others |
| ADDD | Atmospheric Double Drum Dryers
| Others |
| ADDD | Automated Drug Dispensing Device
| Others |
| ADDD | Automated Drug Dispensing Devices
| Others |