| OEO | Office of Economic Opportunity | (美国)经济机会局 |
| OEO | Office of Equal Opportunity | 机会均等办公室 |
| OEO | Officers' Eyes Only | 军官们的眼睛 |
| OEO | Organic Essential Oils | 有机精油 |
| OEO | Optical and Electro-Optical | 光学和电光 |
| OEO | Office of Emergency Operations (FDA and DOE) | 紧急行动办公室（FDA和DOE） |
| OEO | Office of Energy Outreach | 能源外联办公室 |
| OEO | Optical-to-Electrical-to-Optical | 光到电到光 |
| OEO | Optical Electrical Optical | 光电光学 |
| OEO | Other Expeditionary Operations (USMC) | 其他远征作战（USMC） |
| OEO | Office of Enforcement Operations (Federal Bureau of Prisons) | 执法行动办公室（联邦监狱局） |
| OEO | Office of Engineering Outreach | 工程拓展办公室 |
| OEO | Operations Evaluation Office | 运营评估办公室 |
| OEO | Online Editorial Outreach (internet content developers) | 在线编辑外联（互联网内容开发者） |
| OEO | Omega Epsilon Omega | 欧米茄Epsilon欧米茄 |
| OEO | Office Equipment Outlet | 办公设备出口 |