| UIR | Upper flight Information Region | 高空飞行情报区 |
| UIR | User Interface Requirement | 用户界面要求 |
| UIR | Wire Connector (used on drawings, etc.; phonetically, UIR sounds like 'wire') | 电线连接(用于图纸等;一致的电线的国关的听起来就像) |
| UIR | Unusual Incident Report | 异常事件报告 |
| UIR | User Incident Report | 用户事件报告 |
| UIR | Indian River, Delaware, Delmarva Power | 印度河、特拉华、德尔马瓦电力 |
| UIR | Unitary Irreducible Representation (mathematics) | 酉不可约表示(数学) |
| UIR | Undoing Institutional Racism | 废除制度性种族主义 |
| UIR | Unemployment Insurance Reporter (CCH) | 失业保险报告员(CCH) |
| UIR | Quirindi, New South Wales, Australia | 澳大利亚新南威尔士州奎林迪 |
| UIR | Uniform Impedance Resonator | 均匀阻抗谐振器 |
| UIR | Unidentified Infrared Feature | 未识别的红外特征 |
| UIR | User Interface Research | 用户界面研究 |
| UIR | Unidentified Infrared | 未识别的红外 |
| UIR | University- Industry Relations | 大学-行业关系 |
| UIR | UROP In Residence | 住宅UROP |
| UIR | Universal Industrial Refrigeration, Inc. | 通用工业制冷公司。 |