| Acronym | Definition |
|---|
| IET➣Institution of Engineering and Technology (merged name of IEE and IIE) |
| IET➣International Economics and Trade |
| IET➣Institute of Electronics and Telecommunications (Poznan University of Technology; Poland) |
| IET➣Integrated Energy Therapy |
| IET➣Institute of Educational Technology |
| IET➣International Environmental Technology |
| IET➣Initial Entry Training |
| IET➣Intramolecular Electron Transfer |
| IET➣Initial Engine Test |
| IET➣International Equipment Trading (est. 1979; Vernon Hills, IL) |
| IET➣Independent Evaluation Team |
| IET➣International Emission Trading |
| IET➣Interactive Educational Technology |
| IET➣Interline E-Ticketing (airline carriers) |
| IET➣Interline Electronic Ticketing (airlines) |
| IET➣Image Enhancement Technology |
| IET➣Institute of Environmental Technology (Houston, TX) |
| IET➣Institute for Environmental Toxicology |
| IET➣In-Port Emergency Team (US Navy) |
| IET➣Industrial Engineering Technician |
| IET➣Initiative for Environmental Technology |
| IET➣Intelligent Electronic Typewriter |
| IET➣Installation Evaluation Test |
| IET➣Informatics, Educational Technology |
| IET➣Intercultural Educational Technology |
| IET➣Integral Effect Test (Korea Atomic Energy Research Institute) |
| IET➣Information and Enterprise Technology |
| IET➣Intelligence Exploitation Team (US DoD) |