| IEO | Import Express Online 
| Others |
| IEO | Import Express Online
| Others |
| IEO | Independent Evaluation Office
| Others |
| IEO | Indian Engineering Olympiad
| Others |
| IEO | Individual Enrichment Opportunity
| Others |
| IEO | Individual Enrichment Opportunity
| Others |
| IEO | Industrial Engine Operations
| Others |
| IEO | Informal Eating Out
| Others |
| IEO | Initial Exchange Offerings
| Others |
| IEO | Initial Exchange Offerings
| Others |
| IEO | Inland Enforcement Officer
| Others |
| IEO | Installation Environmental Office
| Others |
| IEO | Institut d'Estudis Occitans
| Others |
| IEO | Institut d'Estudis Occitans
| Others |
| IEO | Intelligent Energy Optimizers
| Others |
| IEO | International Economics Olympiad
| Others |
| IEO | International Education Office
| Others |
| IEO | International Education Opportunities
| Others |
| IEO | International Education Opportunities
| Others |
| IEO | International Electoral Observers
| Others |
| IEO | International Electoral Observers
| Others |
| IEO | International Energy Outlook
| Others |
| IEO | International English Olympiad
| Others |
| IEO | International Equestrian Organization
| Others |
| IEO | International Exchange Office
| Others |
| IEO | International Exchange Office
| Others |
| IEO | International Exhibition Organization
| Others |
| IEO | Interrupt Enable Output
| Others |
| IEO | Itial Exchange Offering
| Others |
| IEO | Itial Exchange Offering
| Others |
| IEO | Itial Exchange Offerings
| Others |