- CACU stands for Coolock Artane Credit Union (Ireland)
- CACU stands for Cáncer Cervicouterino (Spanish: cervical cancer)
- CACU stands for Crimes against Children Unit (various locations)
- CACU stands for Community America Credit Union
- CACU stands for Central Agricultural Cooperative Union (Egypt)
- CACU stands for California Agribusiness Credit Union
- CACU stands for Cardiac Acute Care Unit (Stony Brook University Medical Center; Stony Brook, NY)
- CACU stands for Central Alternative Care Unit
- CACU stands for Computer Air Conditioning Unit
CACU