| RRA | Radio Regenerator Adaptation | 無線訊號再生調適器 |
| RRA | Resident Research Associateship | 居民研究协会 |
| RRA | Regional Reporters Association | 地区记者协会 |
| RRA | radiation research association | 辐射研究协会 |
| RRA | Road Roller Association (UK) | 压路机协会（英国） |
| RRA | Rocket Rail Association (Quake 2 Clan) | 火箭轨道协会（地震2族） |
| RRA | Reconstructionist Rabbinical Association | 重建拉比协会 |
| RRA | Rock River Arms, Inc. | 洛克河武器公司。 |
| RRA | Radiation Research Associates, Inc (Fort Worth, TX) | 辐射研究联合公司（德克萨斯州沃思堡） |
| RRA | Radio Relay Aircraft | 无线电中继飞机 |
| RRA | Rolls Royce Allison | 劳斯莱斯Allison |
| RRA | Rockingham Regional Ambulance, Inc | Rockingham地区救护车公司 |
| RRA | Rothstein, Rosenfeldt, Adler (law firm; Fort Lauderdale, FL) | Rothstein，Rosenfeldt，Adler（律师事务所；佛罗里达州劳德代尔堡） |
| RRA | Robert Rytter & Associates, Inc. | 罗伯特Rytter、员工、公司 |
| RRA | Rapid Rural Appraisal | 快速农村评估 |
| RRA | Rahanwein Resistance Army | 拉汉温抵抗军 |
| RRA | Registered Records Administrator | 注册记录管理员 |
| RRA | Reproductive Rights Alliance | 生殖权利联盟 |
| RRA | Research Review Act | 研究审查法案 |
| RRA | Residual Risk Assessment | 剩余风险评估 |
| RRA | Radio Resource Allocation | 无线电资源分配 |
| RRA | Registered Research Agency (Australian government) | 注册研究机构（澳大利亚政府） |
| RRA | Rolls-Royce and Associates Ltd | 劳斯莱斯联合有限公司 |
| RRA | Resource Requirements Analysis | 资源需求分析 |
| RRA | radio receptor assay | 放射性受体测定 |
| RRA | registered record administator | 注册记录管理员 |
| RRA | radioreceptor activity | 放射性受体活性 |
| RRA | Round Robin Archive | 循环存档 |
| RRA | Rock River Arsenal | 洛克河兵工厂 |
| RRA | Rahanweyne Resistance Army | Rahanweyne抵抗军 |
| RRA | Revenue Reconciliation Act of 1990 | 1990年收入调节法 |
| RRA | Ridgecrest Redevelopment Agency | 山脊重建局 |
| RRA | Relative Risk Aversion | 相对风险规避 |
| RRA | Refugee Relief Act of 1953 | 1953年《难民救济法》 |
| RRA | Reclamation Reform Act of 1982 | 1982年《复垦改革法案》 |
| RRA | Reform and Restructuring Act | 《改革与重组法案》 |
| RRA | Radioreceptor Assay (detecting steroid hormones in blood serum) | 放射受体测定（检测血清中的类固醇激素） |
| RRA | Refitted and Retired Aircraft | 改装和退役飞机 |
| RRA | Railroad Retirement Act | 铁路退休法案 |
| RRA | Risk and Reliability Analysis | 风险和可靠性分析 |
| RRA | Internal Revenue Service Restructuring, and Reform Act of 1998 | 1998年《国内税收服务重组和改革法案》 |
| RRA | Restructuring and Reform Act of 1998 (US IRS) | 1998年重组和改革法案（美国国税局） |
| RRA | Requirements Request Action | 需求请求操作 |
| RRA | Race Relations Act | 种族关系法 |
| RRA | Red Revolutionary Army | 红色革命军 |
| RRA | Round Robin Archive (computers, databases) | 循环存档（计算机、数据库） |
| RRA | Russell Reynolds Associates | 罗盛咨询 |
| RRA | Rock River Arms | Rock River Arms公司 |
| RRA | Radioreceptor assay | 放射受体测定 |