OEP

OEP may refer to:


 * Object Engineering Process
 * Occurrence Exceedance Probability, a risk curve used in catastrophe modeling
 * Octaethylporphyrin, a synthetic porphyrin
 * Office for Environmental Protection, UK organisation to be created by the Environment Bill and as of July 2021 existing in an interim state
 * Office of Emergency Preparedness, U.S. Executive Branch organization abolished in 1973 and responsibilities divided among several organizations
 * Office of Emergency Planning, emergency planning organisation within Ireland's Dept. of Defence
 * One Equity Partners, the private equity affiliate of JPMorgan Chase
 * Open Educational Practices
 * Open Energy Platform, a project providing database infrastructure for open energy system models
 * Open Enrollment Period, a period of time in which individuals may enroll in or change their health insurance plans.
 * Optometric Extension Program
 * Országos Egészségbiztosítási Pénztár (National Health Insurance Fund), the publicly funded health service organization of Hungary
 * Oxfordshire Economic Partnership