| Acronym | Definition |
|---|
| ARRT | American Registry of Radiologic Technologists |
| ARRT | Advanced Rehabilitation Research Training (federal grant) |
| ARRT | Acquisition Requirements Roadmap Tool (software) |
| ARRT | Alaska Regional Response Team |
| ARRT | Assabet River Rail Trail (Massachusetts) |
| ARRT | A River Runs Through It |
| ARRT | Adult Reading Round Table (Illinois) |
| ARRT | AIDS Resources of Rural Texas |
| ARRT | American Revolution Round Table |
| ARRT | Advances in Renal Replacement Therapy (journal) |
| ARRT | Advances in Renal Replacement Therapy |
| ARRT | Auxiliary Rapid Response Team |
| ARRT | Audio Reinforcement Reminder Tones |