| RGA | Royal Garrison Artillery | (英国)皇家要塞炮兵 |
| RGA | Republican Governor's Association | 共和党州长协会 |
| RGA | Rio Grande, Tierra Del Fuego, Argentina (Airport Code) | 阿根廷火地岛格兰德河（机场代码） |
| RGA | Restricted Growth Association (UK) | 限制增长协会（英国） |
| RGA | Ricegrowers' Association of Australia Inc. | 澳大利亚Ricegrowers协会 |
| RGA | Republican Governors Association | 共和党州长协会 |
| RGA | Real-time Graphics and Audio | 实时图形和音频 |
| RGA | Ron Goodin & Associates, Inc. | 罗恩Goodin和员工,公司 |
| RGA | Royal Garrison Archiver | 皇家驻军档案馆 |
| RGA | Rating Of Grant Applications | 赠款申请的评级 |
| RGA | Rio Grande, TF, Argentina | Rio Grande，TF，阿根廷 |
| RGA | Reduced Gradient Algorithm | 简化梯度算法 |
| RGA | Rate Gyro Assembly | 速率陀螺组件 |
| RGA | Residual Gas Analyzer | 残余气体分析仪 |
| RGA | Russian State Archive for Social/Political History | 俄罗斯国家档案的社会或政治的历史 |
| RGA | Reinsurance Group of America | 美国再保险集团 |
| RGA | Reflection Grating Assembly | 反射光栅组件 |
| RGA | Return Goods Authorization | 退货授权书 |
| RGA | Reliability Growth Analysis | 可靠性增长分析 |
| RGA | Rapid Generation Advance | 快速发电推进 |
| RGA | Residential Gateway Architecture | 住宅网关体系结构 |
| RGA | right gastric arteria | 右胃动脉 |
| RGA | retained gastric antrum | 胃窦滞留 |
| RGA | Reinsurance Group of America, Inc. | 美国再保险集团。 |
| RGA | Residual Gas Analysis | 残余气体分析 |
| RGA | Random Girl Art | 随机女孩艺术 |