| XI | xi particle | Ξ粒子 |
| XI | Xenobiological Initiative | 异种生物学倡议 |
| XI | eXternal Interface | 外部接口 |
| XI | Extreme Insight (Business Objects) | Extreme Insight（业务对象） |
| XI | 11 (Roman numeral) | 11（罗马数字） |
| XI | Exchange Infrastructure | Exchange基础架构 |
| XI | X Identification (frame) | X标识（框架） |
| XI | Experimental Intermedia | 实验中间体 |
| XI | Xidi International Incorporated | 西迪国际公司 |
| XI | Fastracker Instrument file | Fastracker仪器文件 |
| XI | Xavier Institute | 泽维尔研究所 |
| XI | Xtreme Integrity | Xtreme完整性 |
| XI | Xenon Indicator | 氙气指示灯 |
| XI | Xcellence For Intel | 英特尔Xcellence |
| XI | Extreme Illumination | 极端照明 |
| XI | Warfighting Integration (USAF organization) | 作战一体化（美国空军组织） |
| XI | eXchange Infrastructure (SAP) | eXchange基础架构（SAP） |
| XI | X-ray Instrumentation | X射线仪器 |
| XI | Xpert Intelligence | Xpert智能 |
| XI | XML Import | XML导入 |
| XI | Roman Numeral 11 | 罗马数字11 |