| Acronym | Definition |
|---|
| ARRO➣Association of Residents in Radiation Oncology |
| ARRO➣Australasian Road Rescue Organisation |
| ARRO➣Associazione Regionale Romana Orafi (Italian: Regional Association of Roman Goldsmiths) |
| ARRO➣Academic Regulations and Records Office (Hong Kong) |
| ARRO➣Arizona Regents Reach Out (Phoenix, AZ) |
| ARRO➣Autism Respite Resource Outreach (Hampton Falls, NH) |