| Acronym | Definition |
|---|
| RARF➣Riken Accelerator Research Facility (heavy-ion research; Japan) |
| RARF➣Regional Area Road Fund (Arizona Department of Transportation) |
| RARF➣Rio Art Rock Festival (Rio de Janeiro, Brazil) |
| RARF➣Romanian Amateur Radio Federation |
| RARF➣Reflected Array Radio Frequency |
| RARF➣Recurrent Active Rheumatic Fever (inflammatory disease) |