| Acronym | Definition |
|---|
| OEI➣Organización de Estados Iberoamericanos (Spanish) |
| OEI➣One Engine Inoperative |
| OEI➣Open Enterprise Infrastructure |
| OEI➣Original Equipment Industries |
| OEI➣Office of Evaluation and Inspections (US DHHS) |
| OEI➣Office of Environmental Information |
| OEI➣Office of Energy Independence (various locations) |
| OEI➣Outside Equity Interest |
| OEI➣Omron Electronics, Inc. (various locations) |
| OEI➣Organizational Environment for Integration (Capability Maturity Model Integration) |
| OEI➣Open Ended Investigation |
| OEI➣Operational Efficiency Initiative (various organizations) |
| OEI➣One Eye Integration (trauma therapy) |
| OEI➣Operations Excellence Infusion |
| OEI➣Office of Export Information |
| OEI➣Ovarian Epithelial Inclusion |
| OEI➣Ocean Exploitation Institute (fictitious organization; Terror of MechaGodzilla; 1975) |