| Acronym | Definition |
|---|
| EI➣Employment Insurance |
| EI➣Ireland |
| EI➣Emotional Intelligence |
| EI➣Educational Institute |
| EI➣Early Intervention (special education) |
| EI➣Environmental Impact |
| EI➣Engineering Index |
| EI➣Earth Institute (Columbia University) |
| EI➣European Integration |
| EI➣Employment Insurance Program (Canadian Federal Formerly Unemployment Insurance, UI) |
| EI➣Environmental Illness |
| EI➣Enrique Iglesias (Latin music artist) |
| EI➣Energy Institute (London, UK professional body for energy, oil & gas) |
| EI➣Education International |
| EI➣Engineering Information (rigidity measure) |
| EI➣Aer Lingus (Airline Identification Code) |
| EI➣Environmental Information (various organizations) |
| EI➣Eat It |
| EI➣Electronic Imaging |
| EI➣Emissions Inventory |
| EI➣Educational Insights |
| EI➣Electron Ionization |
| EI➣Election Integrity (election advocacy group) |
| EI➣Entertainment Industry |
| EI➣Electron Impact (ionization) |
| EI➣Exposure Index (cinematography) |
| EI➣Every Issue |
| EI➣East Indies |
| EI➣Electron-Impact Ionization |
| EI➣Enterprise Integration |
| EI➣Equine Influenza |
| EI➣Exercise Information |
| EI➣Esercito Italiano (Italian Army) |
| EI➣Employee Involvement |
| EI➣Energy Intensity |
| EI➣External Interface(s) |
| EI➣Employee Information |
| EI➣External Input |
| EI➣Electromagnetic Induction |
| EI➣Environmental Institute (University of Alabama) |
| EI➣Energy Index |
| EI➣End Item |
| EI➣Economic Ideas |
| EI➣Engineer Intern |
| EI➣Eugene Island |
| EI➣Extended Information |
| EI➣Extraterrestrial Intelligence |
| EI➣Earth Interactions |
| EI➣Extreme Ironing (sport) |
| EI➣Electrical Instrumentation |
| EI➣Entry Interface (NASA) |
| EI➣Electronic Interface |
| EI➣Emotionally Impaired |
| EI➣Exercise Item (US DoD) |
| EI➣Error Indicator |
| EI➣Electrical Interface |
| EI➣Enable Interrupt (assembly language instruction) |
| EI➣Engineering Investigation |
| EI➣Encryption Item (trade) |
| EI➣Expectations Index |
| EI➣Effectiveness Index |
| EI➣Esquerra Independentista (Catalan countries) |
| EI➣Engineering-Installation |
| EI➣Engineering Instructions |
| EI➣Expansion Index (soil) |
| EI➣Expansion Interface |
| EI➣Exposure Investigation |
| EI➣Enemy Infantry (WWIIOnline game) |
| EI➣Extensor Indicis |
| EI➣External Integration |
| EI➣Evening Independent (St Petersburg, FL newspaper) |
| EI➣Event Interval |
| EI➣Eppley Institute |
| EI➣Engineering Interoperability |
| EI➣Electrical Inspectorate |
| EI➣Etiquette International |
| EI➣Études Intégrées (French: Integrated Studies) |
| EI➣Enterprise and Innovations |
| EI➣Ephemeris Improvement |
| EI➣Execution Indexing |