CEF may refer to for:
Military Canadian Expeditionary Force, in the First World War Chinese Expeditionary Force, during the Burma Campaign of World War II Czech Air Force, ICAO airline code French Expeditionary Corps (1943–44) (corps expéditionnaire français), operating in Italy Westover Air Reserve Base in Massachusetts
Finance and economics Caixa Econômica Federal, a Brazilian bank Closed-end fund, a collective investment model Connecting Europe Facility, a European Union fund
Technology Chromium Embedded Framework, an open-source software framework Cisco Express Forwarding, a switching technology Cluster of Excellence Frankfurt Macromolecular Complexes, a nanotechnology institution
Transport Chapel-en-le-Frith railway station, in Derbyshire, England Westover Metropolitan Airport, in Massachusetts Constructions électriques de France
Other uses Bishops' Conference of France () Central Experimental Farm, Ottawa, Canada Child Evangelism Fellowship, an international Christian nonprofit organization Common European Framework of Reference for Languages Conseil des écoles fransaskoises, a school board in Saskatchewan, Canada Conservative European Forum, a British political organisation