| Abbreviation | Definition |
|---|---|
| APUSH | Advanced Placement in United States History |
| AQA | Assessment and Qualifications Alliance |
| AQUA | Asking Questions And Understanding Answers |
| Ar | Architecture |
| ARAD | Applied Research and Analysis Directorate (Canada) |
| ARC | Academic Regulations Committee |
| ARC | Academic Resource Center |
| ARC | Academic Resource Connection |
| ARC | Accreditation And Registration Council |
| ARC | Advanced Research For Chariots |
| ARC | Allison Road Classroom |
| ARC | Archaeological Resource Centre |
| ARC | Area Research Center |
| ARC | Australian Research Council |
| ARCS | Advanced Research Computing System |
| ARCT | African Regional Centre For Technology |
| ARD | Admission Review And Dismissal |
| ARD | Admission Review or Dismissal |
| ARD | Admission, Review, and Dismissal |
| ARES | Applied Research and Evaluation Services |