MEF

MEF may stand for:

Government

 * Mission Essential Functions - critical operations of the US government in the face of unexpected disruption

Military

 * Malaita Eagle Force, a militant organization originating in the island of Malaita in the Solomon Islands
 * Marine Expeditionary Force (MEF), one of the major deployable subdivisions of the United States Marine Corps; see 1st Marine Expeditionary Force, 2nd Marine Expeditionary Force, 3rd Marine Expeditionary Force
 * Mediterranean Expeditionary Force
 * Mesopotamian Expeditionary Force during the First World War

Organizations

 * Mahratta Education Fund, Indian non-profit organisation
 * Major Economies Forum on Energy and Climate Change
 * Media Education Foundation
 * MEF International School Istanbul
 * Middle East Forum, an American conservative think tank
 * Ministerio de Economía y Finanzas, the Peruvian ministry of economics and finance
 * Ministerio de Economía y Finanzas, the Uruguayan ministry of economics and finance
 * Ministero dell’Economia e delle Finanze, the Italian ministry of economics and finance
 * Ministry of Environment and Forests, India

Science/technology

 * Managed Extensibility Framework, a software plugin framework, written by Microsoft
 * Maximum Elevation Figure (flying)
 * Maximal expiratory flow, another name for peak expiratory flow in spirometry
 * Medial eye fields
 * Metro Ethernet Forum
 * Modernized e-File (MeF), an electronic system for filing U.S. income taxes
 * Modified Energy Factor (Energy Star Rating Value, US Department of Energy (DOE))
 * Mouse Embryonic Fibroblast
 * Museo Paleontológico Egidio Feruglio collection code
 * Myocyte Enhancer Factor (2)
 * Mouse Embryonic Fibroblast (MEF) Isolation Enzyme 1
 * Multiscale Electrophysiology Format, a data format used in electrophysiology

Transport

 * Mei Foo station, Hong Kong, MTR station code