- ACUA stands for Atlantic County Utilities Authority (Egg Harbor Township, NJ)
- ACUA stands for Association of College and University Auditors
- ACUA stands for Alabama Credit Union Administration
- ACUA stands for Alberta Council for the Ukrainian Arts (Canada)
- ACUA stands for AIM Computer Users Association (UK)
- ACUA stands for Access Control and User Administration (Linux software)
- ACUA stands for ArchiCAD (Computer-Aided Design) Users Association (professional group)
- ACUA stands for Automated Codon Usage Analysis
ACUA