| LPI | Lightning Protection Institute | 避雷研究所 |
| LPI | lines per inch | 线每英寸 |
| LPI | Linux Professional Institute (Linux) | Linux专业协会（Linux） |
| LPI | Linkoping, Sweden - Saab (Airport Code) | 瑞典林克平-萨博（机场代码） |
| LPI | Linux Professional Institute | Linux专业协会 |
| LPI | Louisiana Pain Initiative | 路易斯安那州疼痛倡议 |
| LPI | Lead Program Integrator | 首席项目集成商 |
| LPI | Licensed Plumbing Inspector | 持证管道检验员 |
| LPI | Low Probability of Intercept | 低截获率 |
| LPI | Language Proficiency Index | 测试 |
| LPI | Libyan Petroleum Institute (Tripoli, Libya) | 利比亚石油学会（利比亚的黎波里） |
| LPI | Lysinuric Protein Intolerance | 赖氨酸尿蛋白不耐受 |
| LPI | Living Planet Index | 生命星球指数 |
| LPI | Lunar and Planetary Institute | 月球和行星研究所 |
| LPI | Licensed Private Investigator | 持证私人调查员 |
| LPI | Launching Position Indicator | 发射位置指示器 |
| LPI | Liquid Penetration Inspection | 液体渗透检查 |
| LPI | Labarge Products, Inc (St. Louis, MO) | Labarge Products，Inc（密苏里州圣路易斯） |
| LPI | Log-Polar Image | 对数极坐标图像 |
| LPI | Launch Package Integration | 启动包集成 |
| LPI | Little People of Ireland | 爱尔兰小人物 |
| LPI | Laminated Products Incorporated | 层压制品公司 |
| LPI | Liquid Photo Image | 液体照片图像 |
| LPI | Low- Pressure Isolation | 低压隔离 |
| LPI | Leadership Practices Inventory | 领导力实践清单 |
| LPI | Late Payment Interest | 逾期付款利息 |
| LPI | Lindoping, Sweden | 瑞典林多平 |
| LPI | Line Printer Interface | 行式打印机接口 |
| LPI | Land & Property Information (NSW, Australia) | 土地和财产资料(新南威尔士、澳大利亚) |
| LPI | Last Patient In (clinical trials) | 最后一位住院患者（临床试验） |
| LPI | Lightning Protection Institute (Harvard, Illinois) | 防雷研究所（伊利诺伊州哈佛） |
| LPI | League of Paranormal Investigators | 变态调查者联盟 |
| LPI | Loss Prevention Investigator | 防损调查员 |
| LPI | Last Paid Installment | 上次付款分期付款 |
| LPI | Low-Pressure Injection | 低压喷射 |
| LPI | Low Probability of Interference | 低干扰概率 |
| LPI | Laps Per Incident (racing) | 每次事故的圈数（赛车） |
| LPI | Low Pressure Inflator (SCUBA) | 低压充气机（SCUBA） |
| LPI | Laser Plasma Instability | 激光等离子体不稳定性 |
| LPI | Liquid Photo Imaging | 液体照片成像 |
| LPI | Louisiana Polytechnic Institute (now Louisiana Tech University) | 路易斯安那理工学院（现路易斯安那理工大学） |
| LPI | Language Proficiency Interview | 语言能力面试 |
| LPI | Linder Publishing Inc. | 林德出版公司。 |
| LPI | left posterior-inferior | 左后下 |
| LPI | left pulsatility index | 左搏动指数 |
| LPI | long process of incus | 砧骨长突 |
| LPI | Lunar Planetary Imager | 月球行星成像仪 |