- ADSU stands for Automatic Distress Signal Unit (personal safety device)
- ADSU stands for Automatic Dependent Surveillance Unit (aviation computer)
- ADSU stands for ATM Data Service Unit
- ADSU stands for Anti-Drug and Smuggling Unit (police division in Mauritius Island)
- ADSU stands for Above Deck Sensor Unit (weapon systems)
- ADSU stands for Air Direction Sensing Unit
- ADSU stands for ATM Digital Service Unit (Sprint)
- ADSU stands for As Darkness Surrounds Us (band)
ADSU