| 序号 | 英文 | 音标 | 词性 | 中文 |
| | INSDOC | | | Indian National Scientific Documentation Center 全印科学文献中心 |
| | INSMAT | | | =inspector of materials 材料检验员 |
| | INSP | | | =Information News Sources Profiles 《情报、消息、来源、分布》(期刊) |
| | INSPEC | | | =International Information Service in Physics, Electro-technology, Computer Control 物理学、电子技术、计算机及控制技术情报服务处([英]IEE) |
| | INSTGASE | Inst Gas E | | =Institute of Gas Engineers 煤气工程师学会[英] |
| | INSTHE | Inst HE | | =Institute of Highway Engineers 公路工程师学会[英] |
| | INSTMC | | | =Institute of Measurement and Control 测量与控制学会[英] |
| | INTCON | | | =International Connection 国际电路 |
| | INTEC | | | =International Naval Technology Expose and Conference 国际海军技术展览与会议 |
| | INTECOM | | | =International Council for Technical Communication 国际技术通信委员会 |
| | INTELSAT | `Intel9sAt | abbr. | International Telecommunications Satellitc 国际通信卫星机构 |
| | INTERCOM | | | =Intercommunication System 内部通信系统 |
| | INTEREXPO | | | =International Expositions 国际博览会 |
| | INTERFACE | | | =International Recognized Format for Automatic Commercial Exchange 自动商业交换国际识别格式(SITPRO) |
| | INTERFRIGO | | | =International Railway-Owned Company for Refrigerated Transport 国际铁路冷藏运输公司 |
| | INTERNET | | | =Interactive Network Analysis 交互式网络分析 |
| | INTIP | | | =Integrated Information Processing 综合信息[情报]处理 |
| | INTIPS | | | =Intelligence Information Processing System 智能情报处理系统 |
| | INTOSAI | | | =International Organization of Supreme Audit Institutions国际最高审计机构组织 |
| | INTRALAB | | | =Information Transfer Laboratory 信息传输实验室([美]GSFC) |
| | INTREX | | | =Information Transfer Complex 信息传输复合 |
| | INTUC | `IntQk | abbr. | Indian National Trade Union Congress 印度全国职工大会 |
| | IO | | | =Image Orthicon超正析象管 |
| | IOAS | | | [计] 智能办公室自动化系统 |
| | IOB | | | =Input/Output Buffer 输入/输出缓冲器 |
| | IOC | | abbr. | International Olympic Committee 国际奥林匹克委员会(=CIO) |
| | IOCC | | | =Input/Output Control Center 输入/输出控制中心 |
| | IOCP | | | =Input/Output Control Program 输入/输出控制程序 |
| | IOCS | | | =Input/Output Control System 输入/输出控制系统 |
| | IOCU | | abbr. | International Organization of Consumers Union 国际消费者联盟组织 |
| | IOD | | | =Immediate Oxygen Demand 直接需氧量 |
| | IOE | | abbr. | International Organization of Employers,国际雇佣者组织 |
| | IOJ | | | =Institute of Journalists 新闻工作者学会[英] |
| | IOLC | | | =Integrated Optical Logic Circuit 集成光逻辑电路 |
| | IOM | | abbr. | （英国）马恩岛 (Isle of Man) |
| | IOOF | | abbr. | Independent Order of Odd Fellows 独立共济会(18 世纪在英国创始的一个秘密兄弟会) |
| | IORM | | abbr. | Improved Order of Red Men 红人改进会(美国印第安人一慈善互助机构) |
| | IOS | | | [计]输入输出子系统,集成办公系统 |
| | IOSB | | | I/O状态块 |
| | IOU | 5aiEu5ju: | | I owe you 借条, 借据 |
| | IOW | | abbr. | （英国）怀特岛(Isle of Wight) |
| | IP | | abbr. | Internet Protocol, 网际协议 |
| | IP Number(Internet Protocol Number) | | | 国际协议号码 |
| | IP Voice | | | 它可以让您轻松把您的声音加到email中，它可以通过电话发送、接收并查询您的email，将您的电话和电脑连为一体，使您的Internet更精彩。 |
| | IP address | | | IP地址 |
| | IP datagram | | | IP数据报 |
| | IP error messages | | | IP错误信息 |
| | IP header | | | IP报头 |
| | IP network number | | | IP网号 |
| | IP packet | | | IP信息包 |
| | IP routing | | | IP路由选择 |
| | IPA | | | 国际语音学协会 |
| | IPAA | | | =Independent Petroleum Association of America 美国独立石油协会 |
| | IPAE | | | =Isopropyl Aminoethanol 异丙基胺基乙醇 |
| | IPB | | | =Illustrated Parts Breakdown 附有图解说明的零件破坏情况 |
| | IPBM | | | =Interplanetary Ballistic Missile 星际弹道导弹 |
| | IPC | | | [UNIX] 进程间通讯 |
| | IPD | | | =Insertion Phase Delay 插入相位延迟 |
| | IPE | | | = Industrial Plant Equipment 工业厂房设备 |
| | IPFC | | | = Indo-Pacific Council 印度-太平洋渔业委员会(联合国FAO) |
| | IPFM | | | =Integral Pulse Frequency Modulation 整体脉冲频率调制 |
| | IPI | | | [计]智能外围接口 |
| | IPL | | | [计]初始装入程序 |
| | IPM | | abbr. | inches per minute 每分钟英寸数,英寸[分] |
| | IPOD | | | =Inductive Potential Divider 电感性电位分压器 |
| | IPOT | | | =Inductive Potentiometer 感应电位计[分压器] |
| | IPP | | | =Interpulse Period 脉冲周期 |
| | IPPF | | abbr. | International Planned Parenthood Federation 国际计划生育联合会 |
| | IPQ | | | [计]中断请求队列 |
| | IPR | | | =Institute of Pacific Relations 太平洋学会[美] |
| | IPRO | | | =International Patent Research Office 国际专利研究处 |
| | IPS | | abbr. | inches per second 每秒英寸数,英寸[秒] |
| | IPSE | | | 集成化工程项目支持系统 |
| | IPST | | | =Israel Program for Scientific Translations 以色列科技译文社[美](专出版俄文科技著作的英文译本) |
| | IPT | | | =Individual Perception Threshold 个体感觉阈值 |
| | IPTC | | | =International Press Telecommunication Committee 国际报业电信委员会 |
| | IPTS | | abbr. | International Practical Temperature Scale 国际实用温标(指摄氏温标) |
| | IPU | | abbr. | Inter-Parliamentary Union,诸国会议同盟 |
| | IPWR | | | =Integrated Pressurized Water Reactor 综合加压水反应堆 |
| | IPX | | | 以太网所用的协议之一 |
| | IPY | | abbr. | International Polar Year 国际极年 |
| | IQ | | | 智商 |
| | IQSY | | | =International Quiet Sun Year 国际宁静太阳年 |
| | IR | | | = Illinois Research 《伊利诺斯研究》([美]期刊) |
| | IR Seeker | | | =Infrared Seeker 红外搜索器 |
| | IR bake | | | 红外烘箱 |
| | IR seeker | | | 红外搜索器 |
| | IRA | `aIErE | abbr.；abbr. | abbr. <英> Irish Republican Army ,爱尔兰共和军；abbr. <美>Individual Retirement Account,个人退休帐户 |
| | IRANAIR | | abbr. | Iran National Airlines 伊朗国家航空公司 |
| | IRANDOC | | | =Iranian Documentation Centre 伊朗文献中心 |
| | IRB | | | =industrial reference black 工业基准黑 |
| | IRBM | | | =Intermediate Range Ballistic Missile 中程弹道导弹 |
| | IRC | | abbr. | Internet Relay Chatting , Internet 在线聊天系统 |
| | IRCCM | | | =Infrared Counter-Counter -Measures 红外线反干扰措施 |
| | IRCM | | | =Infra-Red Counter-Measures 红外线干扰措施, 红外对抗 |
| | IRE | | | =Institute of Radio Engineers 无线电工程师学会([美]已改名为IEEE) |
| | IRL | | n. | 中断请求线 |
| | IRO | | | =Industrial Relations Office 工业关系局 |
| | IRQ | | | [计] 中断请求 |
| | IRS | | abbr. | Internal Revenue Service 美国国税局 |
| | IRSC | | | =International Radium Standard Commission 国际镭标准委员会 |