| Acronym | Definition |
|---|
| RRA | Restructuring and Reform Act of 1998 (US IRS) |
| RRA | Rapid Rural Appraisal |
| RRA | Railroad Retirement Act |
| RRA | Race Relations Act |
| RRA | Internal Revenue Service Restructuring, and Reform Act of 1998 |
| RRA | Rahanwein Resistance Army |
| RRA | Round Robin Archive (computers, databases) |
| RRA | Relative Risk Aversion |
| RRA | Radioreceptor Assay (detecting steroid hormones in blood serum) |
| RRA | Reconstructionist Rabbinical Association |
| RRA | Registered Research Agency (Australian government) |
| RRA | Russell Reynolds Associates |
| RRA | Registered Records Administrator |
| RRA | Reclamation Reform Act of 1982 |
| RRA | Registered Radiologist Assistant |
| RRA | Red Ribbon Army (gaming) |
| RRA | Resident Research Associateship |
| RRA | Reproductive Rights Alliance |
| RRA | Rothstein, Rosenfeldt, Adler (law firm; Fort Lauderdale, FL) |
| RRA | Reform and Restructuring Act |
| RRA | Regional Reporters Association |
| RRA | Radio Resource Allocation |
| RRA | Road Roller Association (UK) |
| RRA | Rock River Arms, Inc. |
| RRA | Radiation Research Associates, Inc (Fort Worth, TX) |
| RRA | Rolls Royce Allison |
| RRA | Rolls-Royce and Associates Ltd |
| RRA | Residual Risk Assessment |
| RRA | Refugee Relief Act of 1953 |
| RRA | Radio Relay Aircraft |
| RRA | Research and Related Activities Account (US NSF) |
| RRA | Refitted and Retired Aircraft |
| RRA | Rocket Rail Association (Quake 2 Clan) |
| RRA | Robert Rytter & Associates, Inc. |
| RRA | Research Review Act |
| RRA | Requirements Request Action |
| RRA | Riddlesdown Residents' Association (UK) |
| RRA | Risk and Reliability Analysis |
| RRA | Rockingham Regional Ambulance, Inc |
| RRA | Resource Requirements Analysis |
| RRA | Robin's Revenge Army |
| RRA | Red River Authority (Texas) |
| RRA | Red Revolutionary Army |