'''OEP''' may refer to: {{TOC right}} == Government == * Office of Emergency Preparedness, United States, 1968–1973 * Office of Emergency Planning (Ireland), formed 2001 * Office for Environmental Protection, United Kingdom, formed 2021 * {{lang|hu|Országos Egészségbiztosítási Pénztár}} (National Health Insurance Fund), Hungary, formed 1993
== Other businesses and organisations == * One Equity Partners, the private equity affiliate of JPMorgan Chase * Open Energy Platform, a project providing database infrastructure for open energy system models * Optometric Extension Program * Oxfordshire Economic Partnership
== Other uses == * Octaethylporphyrin, a chemical * Open Educational Practices * Open enrollment period, during which employees may change health insurer * Occurrence Exceedance Probability, a risk curve used in catastrophe modeling <!-- * Object Engineering Process --> {{disambiguation}}