ADK
- ADK (automobile)
- ADK (gene)
- ADK (honour)
- ADK Corporation
- ADK/ADB class diesel multiple unit
- Adak Airport
- Adenosine kinase
- Adenylate kinase
- Adg
- Adirondack Mountain Club
- Aggressors of Dark Kombat
- Android Open Accessory Development Kit
- Apna Dal (Kamerawadi)
- Ardwick railway station
- Asatsu-DK
- Dinesh Kanagaratnam
- Lycée Anne de Kiev
- Windows Assessment and Deployment Kit