| Acronym | Definition |
|---|
| IE | Internet Explorer (Microsoft) |
| IE | Id Est (Latin: That Is) |
| IE | In Effect |
| IE | Information Element (ATMF) |
| IE | Ireland (top level domain name) |
| IE | Information Exchange |
| IE | Industrial Engineering |
| IE | Instituto de Empresa (Madrid, Spain business school) |
| IE | Information Engineering |
| IE | International Education |
| IE | Institute of Education (UK) |
| IE | Import/Export |
| IE | Interactive Entertainment (International Conference) |
| IE | Information Environment |
| IE | In Essence |
| IE | Inclusive Education |
| IE | Information Extraction |
| IE | Intelligent Enterprise |
| IE | Inland Empire (southern California) |
| IE | Inland Empire (California) |
| IE | Industrial Engineer |
| IE | International Economy (commerical carriage modality; FedEx) |
| IE | Indo-European |
| IE | International Exchange |
| IE | Ion Exchange |
| IE | Industrial Ethernet (extreme operating environments) |
| IE | Individual Events |
| IE | Inference Engine |
| IE | Inside Edition (TV show) |
| IE | Instrument Engineer |
| IE | Industrial Ecology |
| IE | Initial Evaluation |
| IE | Iarnród Éireann (Irish Rail) |
| IE | Individual Entrepreneur (various locations) |
| IE | Initial Equipment |
| IE | Ionization Energy |
| IE | In Exception |
| IE | Infective Endocarditis |
| IE | Improv Everywhere (comedy group) |
| IE | Iced Earth (band) |
| IE | Initial Elevation (line) |
| IE | Industry Executive |
| IE | Institute of Energy |
| IE | Immediate Export (logistics) |
| IE | Information Expert |
| IE | Infrared Emission |
| IE | Initiating Event |
| IE | Individual Equipment |
| IE | Solomon Airlines (airline code) |
| IE | Internal Examination |
| IE | Input Enable |
| IE | Interrupt Enable Register (Intel 8051 Microcontroller register) |
| IE | Inhale Exhale |
| IE | Intellectual Elites |
| IE | Instrumental Enrichment |
| IE | Independent Engineer (job title) |
| IE | Investment Entity (IRS Form 5500) |
| IE | Interior Elements (furniture industry) |
| IE | Interactive Encyclopedia |
| IE | Investment Efficiency |
| IE | Institute of Export |
| IE | Integration Engineering |
| IE | International eCommerce |
| IE | Idle End |
| IE | Improvement Era (LDS Church) |
| IE | Iniezione Elettronica (Italian: electronic injection) |
| IE | Inspiration Expiration (ratio) |
| IE | Irradiation Effect |
| IE | Iridescent Effect |
| IE | Income Endowment (life insurance) |
| IE | Internationale Enheder (Danish: International Units; medicine) |
| IE | Indemnité d'Expatriation (French: Expatriation Allowance) |
| IE | Inhibition-Excitation |
| IE | Ignition Electrode |
| IE | Instrumental Engineering |
| IE | Inspector Examiner (US FAA) |
| IE | Instrument Earth |
| IE | Instrument Examiner |
| IE | Industry and Environment Office of UNEP |
| IE | Inverted Elevation |
| IE | Insurer's Examination (Canada) |
| IE | Independent Evaluation/Evaluator |