| Acronym | Definition |
|---|
| OED | Oxford English Dictionary |
| OED | Office of Economic Development |
| OED | Operations Evaluation Department |
| OED | Online Etymology Dictionary |
| OED | Olje- og Energidepartementet (Norwegian: Ministry of Petroleum and Energy) |
| OED | Office of Energy and Defense (Indiana) |
| OED | Oregon Employment Department |
| OED | Organic Electroluminiscent Display |
| OED | Optimal Experiment Design |
| OED | Office of Enrollment and Discipline |
| OED | Office of the Executive Director |
| OED | Organization and Employee Development (various locations) |
| OED | Old English Dictionary |
| OED | Office of Entrepreneurial Development (various organizations) |
| OED | Opto-Electronic Device |
| OED | Original Effective Date (health insurance) |
| OED | Oracle Energy Downstream |
| OED | Optical Edge Device |
| OED | Oxidation Enhanced Diffusion |
| OED | OSIS Evolutionary Development |
| OED | Offer Expiration Date |
| OED | Ogretim Elemanlari Dernegi |
| OED | Operational Effectiveness Demonstration |
| OED | Operational Evaluation Demonstration |
| OED | Operational Environment Documentation |
| OED | Oil Energy Downstream |