| Acronym | Definition |
|---|
| IT | Information Technology |
| IT | Internet Times |
| IT | International Trade |
| IT | India Today (newspaper) |
| IT | Individual Training |
| IT | Italy (Including Sardinia & Sicily) |
| IT | Item |
| IT | Institute of Technology |
| IT | Investment Trust |
| IT | Innovative Technology |
| IT | Information Theory |
| IT | Income Tax |
| IT | Initial Test |
| IT | Individual Therapy |
| IT | Innovative Test |
| IT | Integrated Testing |
| IT | Integration Test |
| IT | Integration Testing |
| IT | Internet Tonight (TechTV) |
| IT | Influence Technology |
| IT | Iran Time (GMT+0300) |
| IT | Injury Time (soccer) |
| IT | Instrument Team |
| IT | Instrument Test |
| IT | Inclusive Tour |
| IT | Iowa Telecom |
| IT | Inside Terminal (telephony) |
| IT | Inspiration Technology (Compaq) |
| IT | Integrated Terminal |
| IT | Intermediate Technology |
| IT | Instructor Trainer (American Red Cross) |
| IT | Instructor |
| IT | Imagine That |
| IT | Instructional Technology (educational technology) |
| IT | International Terrorism |
| IT | Institutional Training |
| IT | Ion Trap |
| IT | Information Systems Technician (US Navy Rating) |
| IT | Integral Transform |
| IT | Inflation Targeting |
| IT | Inheritance Tree (MIB) |
| IT | In Transition |
| IT | Instant Teller (CIBC Banking, Canada) |
| IT | Italic (linguistics) |
| IT | Immunotherapy |
| IT | Intermittent Therapy |
| IT | Interoperability Test |
| IT | Industrial Trainee |
| IT | In Topic |
| IT | Integrated Teaming (Capability Maturity Model Integration) |
| IT | Intercity Transit |
| IT | Imperial Tobacco |
| IT | Immortal Technique (rapper) |
| IT | Interline Transfer (CCD image devices) |
| IT | Iliotibial Band |
| IT | Icy Tower (game) |
| IT | Incidental Take |
| IT | Intrathecal |
| IT | Immunology Today |
| IT | Intratumoral |
| IT | Intratracheal |
| IT | Illuminatus Trilogy (book series by R. A. Wilson & R. Shea) |
| IT | Impulse Tracker (digital music) |
| IT | Ischial Tuberosity |
| IT | Information Terminology |
| IT | Indie Talk (filmmaking web community) |
| IT | Incentive Training (US DoD) |
| IT | Incredible Technologies, Inc. (gaming manufacturer; Arlington Heights, IL) |
| IT | Inanimate Target |
| IT | Improved Touring (racing forum) |
| IT | Instituto de Telecomunicações (Portuguese: Telecommunications Institute) |
| IT | Inferotemporal Cortex (brain area) |
| IT | Integrated Timeline |
| IT | Interruptible Transportation (low priority transportation service) |
| IT | Ignition Transformer |
| IT | Ilmatorjunta (Finnish: Anti-aircraft defence) |
| IT | Inactivity Test |
| IT | Insuficiencia Tricuspidea (Spanish: Tricuspid Insufficiency) |
| IT | Insulating Transformer |
| IT | Instructor Text Book |
| IT | Intelligent Terrain |
| IT | Inter-Toll |
| IT | Integrated Trials |
| IT | Intermediate Trunk |
| IT | Inner Targets |
| IT | Indecisive Time (Kids Next Door TV show) |
| IT | Internodal Transport (Sprint) |
| IT | Interstitial Transfer |
| IT | Inspection Traveler |
| IT | International Technology Division |
| IT | Income Tax Ruling Series (IRS) |
| IT | Increasing Term Rider (life insurance) |
| IT | Iconoclastic Titans (Quake 3 CTF Clan) |
| IT | Indirectly Tunable |