| Acronym | Definition |
|---|
| HRRA➣Hampton Roads Realtors Association (Virginia) |
| HRRA➣Housatonic Resources Recovery Authority (regional waste management authority; Connecticut) |
| HRRA➣Hudson River Recreation Area (Lake George, NY) |
| HRRA➣High-Risk Research in Anthropology (US NSF publication) |
| HRRA➣Hawaii Road Race Association |
| HRRA➣Horse Racing Redevelopment Act (Delaware) |