- ADCU stands for Australian Defence Credit Union (Sydney, NSW, Australia)
- ADCU stands for Advanced Data Communications Utility
- ADCU stands for AC to DC Converter Unit
- ADCU stands for Agricultural Diversification Coordinating Unit (Organisation of Eastern Caribbean States)
- ADCU stands for Ateneo De Cagayan University (est. 1933; Xavier University; Philippines)
- ADCU stands for Alarm Display and Control Unit
- ADCU stands for Association of Data Communications Users, Incorporated
- ADCU stands for Association of DuPont Credit Unions
ADCU