| OPI | Operational Performance Indicator | 运营绩效指标 |
| OPI | Optus Private IP | Optus专用IP |
| OPI | Optional Procedure Indicator | 可选程序指示器 |
| OPI | Other People's Inventory | 别人的存货 |
| OPI | Oral Proficiency Interview (English language test) | 口语能力面试(英语语言测试) |
| OPI | Outdoor Pointing Interface (meter for aligning broadband satellite signals for internet) | 室外指向接口(用于校准互联网宽带卫星信号的仪表) |
| OPI | Office of Public Instruction | 公共教育办公室 |
| OPI | Omnibus Personality Inventory | 综合人格问卷 |
| OPI | Oxaloacetate Pyruvate Insulin | 草酸丙酮酸胰岛素 |
| OPI | Over the Phone Interpretation (Language Line Services, Monterey, CA) | 电话口译(加利福尼亚州蒙特雷语言热线服务) |
| OPI | Open Prepress Interface | 打开预印界面 |
| OPI | Openings Per Inch ( air filter mesh grades) | 每英寸开口数(空气过滤网等级) |
| OPI | Office of Public Information | 新闻办公室 |
| OPI | Organizational Performance Infrastructure | 组织绩效基础设施 |
| OPI | Office of Police Integrity (Victoria, Australia) | 警察廉政办公室(澳大利亚维多利亚州) |
| OPI | Omnitel Pronto Italia | 意大利Omnitel Pronto |
| OPI | Ocean Profile on the Internet | Internet上的海洋概况 |
| OPI | Outside Plant Interface | 外部设备接口 |
| OPI | Obscenity, Profanity, Indecency (FCC) | 淫秽、猥亵、猥亵(FCC) |
| OPI | Office of Primary Interest | 任务统管协调办公室 |
| OPI | Open Payment Initiative | 开放式支付计划 |
| OPI | Oracle Program Interface | Oracle程序界面 |
| OPI | Oral Presentation Initiative | 口头陈述倡议 |
| OPI | Officer of Principal Interest | 主要利益管理人 |
| OPI | Other (Political) Party Identifier | 其他(政治)政党标识符 |
| OPI | Office Products International | 国际办公产品 |
| OPI | Old Patient In | 老年患者入住 |
| OPI | Opinion Research Corporation | 意见研究公司 |
| OPI | Outsource Partners International, Inc. | 外包合作伙伴国际有限公司。 |
| OPI | oculoparalytic illusion | 眼麻痹错觉 |
| OPI | Office of Policy Integration (DOE) | 政策整合办公室(DOE) |
| OPI | Oral Proficiency Interview | 口语熟练度面试 |
| OPI | Office Products International (London, UK) | 国际办公产品(英国伦敦) |
| OPI | Occupational Performance Issue | 职业绩效问题 |
| OPI | Oil Pressure In | 机油压力输入 |
| OPI | Online Product Information | 在线产品信息 |
| OPI | Operator's Instructions | 经营者的指示 |
| OPI | OposiciÓn de Izquierda | OposiciÓn de Izquierda |
| OPI | Oenpelli, Northern Territory, Australia | Oenpelli,澳大利亚北领地 |
| OPI | Other Peoples Interviews | 其他人访谈 |