ADF
- ADF Solutions
- ADF/Cofilin family
- Adıyaman Airport
- Aerospace Data Facilities
- African dwarf frog
- Aircraft deicing fluid
- Alcohol and Drug Foundation
- Alejandro Davidovich Fokina
- Alliance Defending Freedom
- Allied Democratic Forces
- Alternative display facility
- Ambazonia Defence Forces
- American Dance Festival
- Amiga Disk File
- Amsterdam Density Functional
- Antalya Diplomacy Forum
- Anyang East railway station
- Arab Democracy Foundation
- Arab Deterrent Force
- Army Deployment Force
- Asian Dub Foundation
- Augmented Dickey–Fuller test
- Australian Defence Force
- Automatic direction finder
- Automatic document feeder
- Design Factory
- Dexter B. Florence Memorial Field
- Dhofari Arabic
- Oracle Application Development Framework
- Pipidae
- Ár nDraíocht Féin