| IEG | Ideal Education Group 
| Others |
| IEG | Image Engineering Group
| Others |
| IEG | Image Enrichment Group
| Others |
| IEG | Immediate Early Gene
| Others |
| IEG | Immediately Early Genes
| Others |
| IEG | Implementing Electronic Government
| Others |
| IEG | Independent Evaluation Group
| Others |
| IEG | Independent Expert Group
| Others |
| IEG | Individual Engagement Grants
| Others |
| IEG | Informal Experts Group
| Others |
| IEG | Information Engineering Group
| Others |
| IEG | Information Exchange Guide
| Others |
| IEG | Institute for Electronic Goverenance
| Others |
| IEG | Institute for Electronic Governance
| Others |
| IEG | Institute for Electronic Government
| Others |
| IEG | Institute for Environmental Genomics
| Others |
| IEG | Institute of Economic Growth
| Others |
| IEG | Institute of Experimental Genetics
| Others |
| IEG | Integrated Equipment Group
| Others |
| IEG | Intel Extreme Graphics
| Others |
| IEG | Intelligent Evidence Gathering
| Others |
| IEG | Interactive Engagement Group
| Others |
| IEG | Intercommunale d'Etude et de Gestion
| Others |
| IEG | Intergovernmental Expert Group
| Others |
| IEG | International Elite Guard
| Others |
| IEG | International Energy Group
| Others |
| IEG | International Engineering Graduate
| Others |
| IEG | Internet Entertainment Group
| Others |
| IEG | Investment Experts Group
| Others |
| IEG | Iris Experts Group
| Others |
| IEG | Irq Edge
| Others |
| IEG | Italian Exhibition Group
| Others |
| IEG | Iterative Exponential Growth
| Others |
| IEG | Zielona Gora, Poland
| Others |