EFF or eff may refer to: Politics Economic Freedom Fighters, a South African communist political party Economic Freedom Fund, an American political organization Election Fighting Fund, a British suffragist organization supporting the early Labour Party Electronic Frontier Foundation, a US-based international digital rights group Evergreen Freedom Foundation, an American political think tank Other uses Eff (duo), a German musical duo Eff (programming language), a functional programming language with focus on algebraic effects Efficiency (basketball), a statistical benchmark Effingham Junction railway station, Surrey, England, National Rail station code The Electronic Font Foundry, a British computer type foundry Emmett/Furla Films, now Emmett/Furla Oasis Films, an American production company Environmental Film Festival in the Nation's Capital, in Washington, D.C., United States Ethiopian Football Federation Extrusion freeform fabrication, a method for fabricating functionally graded material F, a letter of the alphabet Fuck See also F (disambiguation)