| Acronym | Definition |
|---|
| ARRR➣Agenzia Regione Recupero Risorse (Italian: Area Agency Resource Recovery) |
| ARRR➣Adjusted Relative Risk Reduction |
| ARRR➣Antwerp-Rotterdam-Rhine-Ruhr (chemical cluster) |
| ARRR➣Annual Riyadh Radiology Review (Riyadh, Saudi Arabia) |
| ARRR➣Adjusted Relative Recurrence Rate (urinary stones; urology) |