| IT | Information Technology | 信息技术 |
| IT | international tolerance | 国际允许误差 |
| IT | International Tourism | 国际旅游 |
| IT | Italy | 意大利 |
| IT | intertrochanteric diameter | 粗隆间径 |
| IT | Information Theory | 信息论 |
| IT | Input Translator | 输入翻译程序 |
| IT | Internal Translator | 内部翻译程序 |
| IT | International Trade | 国际贸易 |
| IT | Item Transfer | 项目转移[变换] |
| IT | Ion Trap | 离子阱 |
| IT | International Transit | 国际转接 |
| IT | Instant Teller (CIBC Banking, Canada) | 即时柜员（加拿大CIBC银行） |
| IT | Initial Test | 初始测试 |
| IT | Iliotibial Band | 髂胫束 |
| IT | Ignition Transformer | 点火变压器 |
| IT | Integration Test | 集成测试 |
| IT | Inclusive Tour | 包容性旅游 |
| IT | Insulating Transformer | 绝缘变压器 |
| IT | Intercity Transit | 城际交通 |
| IT | Instructional Technology (educational technology) | 教学技术（教育技术） |
| IT | Interruptible Transportation (low priority transportation service) | 可中断运输（低优先级运输服务） |
| IT | Inside Terminal (telephony) | 内部终端（电话） |
| IT | Intermediate Trunk | 中间中继线 |
| IT | Internet Times | 互联网时代 |
| IT | Inferotemporal Cortex (brain area) | 颞下皮质（脑区） |
| IT | Icy Tower (game) | 冰塔（游戏） |
| IT | Incidental Take | 偶然事件 |
| IT | Interoperability Test | 互操作性测试 |
| IT | Insuficiencia Tricuspidea (Spanish: Tricuspid Insufficiency) | 三尖瓣功能不全（西班牙语：三尖瓣不全） |
| IT | Immortal Technique (rapper) | 不朽技巧（说唱歌手） |
| IT | Iowa Telecom | 爱荷华电信 |
| IT | Imagine That | 想象一下 |
| IT | Illuminatus Trilogy (book series by R. A. Wilson & R. Shea) | Illuminatus三部曲》(专著系列和r .威尔森乳木果) |
| IT | Innovative Technology | 创新技术 |
| IT | Instructor Trainer (American Red Cross) | 讲师培训师（美国红十字会） |
| IT | Interstitial Transfer | 间质转移 |
| IT | Instrument Test | 仪表测试 |
| IT | Instructor Text Book | 讲师教材 |
| IT | Information Terminology | 信息术语 |
| IT | Intensive Therapy | 强化治疗 |
| IT | Inhalation Therapy | 吸入疗法 |
| IT | Instrument Team | 仪表组 |
| IT | intension tremor | 强度震颤 |
| IT | Iconoclastic Titans (Quake 3 CTF Clan) | 标志性塑料泰坦（地震3 CTF氏族） |
| IT | Internodal Transport (Sprint) | 多式联运（Sprint） |
| IT | Injury Time (soccer) | 受伤时间（足球） |
| IT | Intelligent Terrain | 智能地形 |
| IT | Integrated Trials | 综合试验 |
| IT | Ilmatorjunta (Finnish: Anti-aircraft defence) | Ilmatorjunt（芬兰语：防空） |
| IT | Internet Tonight (TechTV) | 今晚互联网（TechTV） |
| IT | Indie Talk (filmmaking web community) | Indie Talk（电影制作网络社区） |
| IT | Individual Therapy | 个人治疗 |
| IT | Iran Time (GMT+0300) | 伊朗的时间(GMT + 0300) |
| IT | immature teratoma | 未成熟畸胎瘤 |
| IT | International Terrorism | 国际恐怖主义 |
| IT | Integrated Testing | 综合试验 |
| IT | Instructor | 教练 |
| IT | Inter-Toll | 国际长途电话 |
| IT | In Transition | 过渡中 |
| IT | Individual Training | 单兵训练 |
| IT | Institute of Technology | 理工学院 |
| IT | Integrated Terminal | 集成终端 |
| IT | Intermittent Therapy | 间歇性治疗 |
| IT | Intrathecal | 鞘内 |
| IT | Intratumoral | 肿瘤内 |
| IT | Investment Trust | 投资信托基金 |
| IT | Intermediate Technology | 中间技术 |
| IT | Inactivity Test | 不活动测试 |
| IT | Integral Transform | 积分变换 |
| IT | Indirectly Tunable | 间接可调谐 |
| IT | Imperial Tobacco | 帝国烟草公司 |
| IT | Information Systems Technician (US Navy Rating) | 信息系统技术员（美国海军等级） |
| IT | Influence Technology | 影响技术 |
| IT | Innovative Test | 创新测试 |
| IT | In Topic | 在主题中 |
| IT | Institutional Training | 公共培训 |
| IT | Inflation Targeting | 通货膨胀目标 |
| IT | Inspection Traveler | 检查旅行者 |
| IT | Interline Transfer (CCD image devices) | 线间传输（CCD图像设备） |
| IT | Industrial Trainee | 工业实习生 |
| IT | Inner Targets | 内部目标 |
| IT | Increasing Term Rider (life insurance) | 增加定期附加险（人寿保险） |
| IT | India Today (newspaper) | 《今日印度》（报纸） |
| IT | Impulse Tracker (digital music) | 脉冲跟踪器（数字音乐） |
| IT | Italic (linguistics) | 斜体（语言学） |
| IT | Income Tax Ruling Series (IRS) | 所得税裁定系列（IRS） |
| IT | Inanimate Target | 无效的目标 |
| IT | Inheritance Tree (MIB) | 继承树（MIB） |
| IT | Italy (Including Sardinia & Sicily) | 意大利(包括撒丁岛和西西里) |
| IT | International Technology Division | 国际技术部 |
| IT | Integrated Teaming (Capability Maturity Model Integration) | 集成团队（能力成熟度模型集成） |
| IT | Ischial Tuberosity | Ischial结节性 |
| IT | Intratracheal | 气管内 |
| IT | Immunotherapy | 免疫疗法 |
| IT | Integration Testing | 集成测试 |
| IT | Inspiration Technology (Compaq) | 灵感科技（康柏） |
| IT | Immunology Today | 今日免疫学 |