| ORR | Orchestra Revolutionn-aireet Romantique | 革命与浪漫乐队 |
| ORR | On-line Resource Room | 在线资源室 |
| ORR | Oriental Rug Review | 东方地毯评论 |
| ORR | Office of Rail Regulation (UK government; formerly Office of the Rail Regulator) | 铁路监管办公室（英国政府；原铁路监管办公室） |
| ORR | Office of Response and Restoration (NOAA) | 响应和恢复办公室（NOAA） |
| ORR | Operational Readiness Review | 工作准备状况检查 |
| ORR | Overall Response Rate (medical treatment) | 总体响应率（医疗） |
| ORR | Office of Refugee Resettlement (HHS) | 难民安置办公室（HHS） |
| ORR | Operator Response Required | 需要操作员响应 |
| ORR | Obligor Risk Rating | 债务人风险评级 |
| ORR | Orroral Valley, Australia (GSTDN tracking station) | 澳大利亚奥罗拉尔谷（GSTDN跟踪站） |
| ORR | Objective Response Rate | 目标响应率 |
| ORR | Office of the Rail Regulator (UK government; now Office of Rail Regulation) | 铁路监管办公室（英国政府；现为铁路监管办公室） |
| ORR | Office of Refugee Resettlement | 难民安置办公室 |
| ORR | Operational Readiness Report | 战备状况报告 |
| ORR | Osage Railroad | Osage铁路 |
| ORR | Oak Ridge Reservation (Tennessee) | 橡树岭保留地（田纳西州） |
| ORR | Yorketown, South Australia, Australia | 澳大利亚南澳大利亚州约克镇 |
| ORR | Operational Replacement Radar | 操作替换雷达 |
| ORR | Oxidation- Reduction Reaction | 氧化还原反应 |
| ORR | Office of Regulation Review (Australia) | 法规审查办公室（澳大利亚） |
| ORR | Off-The-Road Radial Tire | 越野子午线轮胎 |