ESF may refer to:
Education Écoles Sans Frontières, a French educational charity Education Without Borders (Spanish organization) (Spanish: ), a Spanish educational charity Emmanuel Schools Foundation, a British educational charity English Schools Foundation, an organization of twenty two international schools in Hong Kong Esperantic Studies Foundation, a Canadian Esperanto organization European School, Frankfurt am Main, in Germany Evans Scholars Foundation, an American scholarship program State University of New York College of Environmental Science and Forestry, in Syracuse, New York, United States
Science and technology European Science Foundation, a research organization European Studbook Foundation, studbooks of reptiles and amphibians in captivity Electro sinter forging Extended superframe Exatron Stringy Floppy, an 8-bit computer peripheral Explosion Suppressant Foam, used to protect from fire in aircraft wings
Other uses East Sea Fleet, of the Chinese People's Liberation Army Navy Empowering Spirits Foundation, an American LGBT rights organization English Stone Forum, a British conservation organization Entertainment Sports and Fun Camps (ESF), network of day camps Esler Airfield, in Louisiana, United States Estafeta Carga Aérea, a Mexican airline European Services Forum, a lobby group European Social Forum, a conference series European Social Fund of the European Union, currently European Social Fund Plus European Softball Federation European Ski Federation European Squash Federation Exchange Stabilization Fund, of the United States Treasury Department Expeditionary strike group in the United States Navy