| IS | International System | 公制度量衡 |
| IS | Indian Standard | 印度标准 |
| IS | Information Integration System | 资讯整合系统 |
| IS | Intermediate Smooth | 中等光滑度 |
| IS | Iceland | 冰岛 |
| IS | Industrial Society | 工业学会 |
| IS | Inspection Specification | 成品检验规范 |
| IS | interspinal diameter | 髂棘间径 |
| IS | induction soldering | 感应钎焊 |
| IS | Information Services | 信息服务 |
| IS | Image Scanner | 影像扫瞄器 |
| IS | inclinometer survey | 井斜测井 |
| IS | Immune serum | 免疫血清 |
| IS | Information Science | 情报科学 |
| IS | Information System | 情报系统 |
| IS | Initial State | 初始状态 |
| IS | Internal Shield | 内部屏蔽 |
| IS | immune suppression | 免疫抑制 |
| IS | impaction separator | 惯性分离器 |
| IS | impingement separator | 冲击式分离器 |
| IS | inertial separator | 惯性分离器，惯性除尘器 |
| IS | imaging sensor | 成像传感器 |
| IS | inlet swirl | 进口旋流 |
| IS | Imaging System | 成像系统 |
| IS | Integrated Service | 综合业务 |
| IS | Intelligence System | 智能系统 |
| IS | Interactive Service | 交互式业务 |
| IS | Interactive Signal | 交互信号 |
| IS | Interface Specification | 接口规范 |
| IS | Interim Standard | 临时标准 |
| IS | Intermediate System | 中间系统 |
| IS | initiation site | （转录）起始位点 |
| IS | Inventory of Systems | 系统清单 |
| IS | Indexed Sequential | 索引顺序 |
| IS | Impôt sur les SociÉtÉs (French: corporation tax) | Impôt sur les SociÉtÉs (French: corporation tax) |
| IS | Industry Standard | 行业标准 |
| IS | Investments Equal Savings (macroeconomic curve) | 投资等于储蓄（宏观经济曲线） |
| IS | Internet Service | Internet服务 |
| IS | Intermediate School | 中级学校 |
| IS | Information Structure (linguistics) | 信息结构（语言学） |
| IS | International Standard | 国际标准 |
| IS | Indianapolis Star (newspaper) | 印第安纳波利斯星报 |
| IS | Internet Solutions (South Africa) | 互联网解决方案（南非） |
| IS | Intercostal Space | 肋间间隙 |
| IS | Intelligent Sport (Lexus model) | 智能运动（雷克萨斯车型） |
| IS | intraspinal | 椎管内的 |
| IS | Intelligent Systems (IEEE International Conference) | 智能系统（IEEE国际会议） |
| IS | isolation | 隔离 |
| IS | Image Shack (image hosting service) | Image Shack（图像托管服务） |
| IS | Industrial Safety | 工业安全 |
| IS | Interrupt Status | 中断状态 |
| IS | Interstate System | 州际公路系统 |
| IS | Instituto Sertão (Brasil) | Instituto Sertão (Brasil) |
| IS | International Socialists | 国际社会主义者 |
| IS | International Standardization | 国际标准化 |
| IS | Internal Silencer | 内部消音器 |
| IS | Instituti I Statistikes (Albanian: Statistics Institute) | 第一统计研究所（阿尔巴尼亚语：统计研究所） |
| IS | Initial Spares | 初始备件 |
| IS | Immaculata Symphony (Immaculata, PA) | 《不成熟交响曲》（不成熟，PA） |
| IS | International System (of units) | 国际单位制 |
| IS | Interferon Sensitivity | 干扰素敏感性 |
| IS | Intelligence Specialist (Navy Rating) | 情报专家（海军等级） |
| IS | Intelligent Services Gateway | 智能服务网关 |
| IS | Immersible Switch | 浸入式开关 |
| IS | Integrated Science | 综合科学 |
| IS | Image Studio | 图像工作室 |
| IS | Imperial Stout | 帝王世涛 |
| IS | Indian Standards | 印度标准 |
| IS | Isernia, Molise (Italian province) | 伊塞尔尼亚，莫利塞（意大利省） |
| IS | Iron Soldier (Atari Jaguar game) | 钢铁战士（雅达利捷豹游戏） |
| IS | International Supplement (ODT) | 国际增补（ODT） |
| IS | Information Security | 信息安全 |
| IS | In Service | 正在使用中 |
| IS | Intrinsically Safe | 本质安全 |
| IS | Internal Specification | 内部规范 |
| IS | Information Superiority | 信息优势 |
| IS | Inbred Strain | 近交系 |
| IS | Iasi (Romania) | 伊亚西（罗马尼亚） |
| IS | Integer Sort | 整数排序 |
| IS | Isotopic Source | 同位素源 |
| IS | Internal Standard | 内部标准件 |
| IS | Ipecac Syrup | Ipecac糖浆 |
| IS | Intrinsic Safety | 本质安全性 |
| IS | Instrumentation System | 仪表系统 |
| IS | Infrasound | 次声 |
| IS | Instruction Set | 指令集 |
| IS | Internal Stop | 内部停止 |
| IS | Isotope Separation | 同位素分离 |
| IS | Intelligent Sensor | 智能传感器 |
| IS | Initial Study | 初步研究 |
| IS | Importance Sampling | 重要性抽样 |
| IS | Industry Sector | 行业部门 |
| IS | Incentive Spirometer | 激励式肺活量计 |
| IS | Information System(s) | 信息系统 |
| IS | Installation Survey | 安装测量 |
| IS | Integrated System | 集成系统 |
| IS | Industrial Security | 工业安全 |