| IEI | ICP Electronics Inc 
| Others |
| IEI | Idiopathic Environmental Intolerance
| Others |
| IEI | Idiopathic environmental intolerances
| Others |
| IEI | Illinois Eye Institute
| Others |
| IEI | Independent Environments Inc
| Others |
| IEI | Individual Employment Income
| Others |
| IEI | Information Economy Initiative
| Others |
| IEI | Information Element Identifier
| Others |
| IEI | Infrastructure Engineering Inc
| Others |
| IEI | Innovation and Entrepreneurship Institute
| Others |
| IEI | Institute for Economic Inquiry
| Others |
| IEI | Institute for Educational Initiatives
| Others |
| IEI | Institute for Electric Innovation
| Others |
| IEI | Institute for Emerging Issues
| Others |
| IEI | Institute for Engineered Interfaces
| Others |
| IEI | Institute for Engineering Interface
| Others |
| IEI | Institute for Entrepreneurship and Innovation
| Others |
| IEI | Institution of Engineers (India)
| Others |
| IEI | Institution of Engineers India
| Others |
| IEI | Institution of Engineers of Ireland
| Others |
| IEI | Institution of Engineers, Indonesia
| Others |
| IEI | Instructional Enhancement Initiative
| Others |
| IEI | Integral Electronic Ignition
| Others |
| IEI | Integration Engineering Incorporated
| Others |
| IEI | Integrity Excellence and Innovation
| Others |
| IEI | Intensive English for Internationals
| Others |
| IEI | Intensive English Institute
| Others |
| IEI | Intercontinental Events Inc.
| Others |
| IEI | Intercontinental Export Import
| Others |
| IEI | Intercultural Engagement and Inclusion
| Others |
| IEI | International Educators Institute
| Others |
| IEI | International Educators of Illinois
| Others |
| IEI | International Electronics Inc
| Others |
| IEI | International Enamellers Institute
| Others |
| IEI | International English Institute
| Others |
| IEI | International Enterprises Inc
| Others |
| IEI | International Epidemiology Institute
| Others |
| IEI | Interrupt Enable Input
| Others |
| IEI | Interstate Electronics Inc
| Others |
| IEI | Intertemporal Efficiency Index
| Others |
| IEI | Intuitive Ethical Introvert
| Others |
| IEI | Ion Exchange India
| Others |
| IEI | Iran Electronics Industries
| Others |
| IEI | Iwashita Engineering Inc
| Others |