| Acronym | Definition |
|---|
| OER➣Open Educational Resources |
| OER➣Official Exchange Rate |
| OER➣Oxygen-Evolution Reaction (energy) |
| OER➣Office of Extramural Research (US NIH) |
| OER➣Oil Extraction Rate |
| OER➣Odakyu Electric Railway (Japan) |
| OER➣Office of External Relations (various organizations) |
| OER➣Osservatorio Epidemiologico Regionale (Italian: Regional Epidemiological Observatory) |
| OER➣Office of Employee Relations (various locations) |
| OER➣Oracle Enterprise Repository (software) |
| OER➣Office of Educational Research |
| OER➣Octet Encoding Rules |
| OER➣Optimized Edge Router |
| OER➣Office of Emergency Response |
| OER➣Officer Evaluation Report |
| OER➣Optimized Edge Routing |
| OER➣Owners' Equivalent Rent |
| OER➣Office of Equal Rights (US FEMA) |
| OER➣Operating Expense Ratio |
| OER➣Officer Efficiency Report |
| OER➣Office of Energy Research |
| OER➣Open Ended Response |
| OER➣Officer Effectiveness Report |
| OER➣Office of Environmental Restoration |
| OER➣Operational Electronic Intelligence (ELINT) Requirements (US DoD) |
| OER➣Office of Exploratory Research |
| OER➣Orange Empire Railway |
| OER➣Organizational Efficiency Review |
| OER➣Operating Experience Report/Review |
| OER➣Odd-Even Rule |
| OER➣Order Entry Representative |