EEF or Eef may refer to:
People Eef, nickname of Ifar Eef Barzelay (), Israeli-American musician Eef, nickname of Evert Dolman (1946–1993), Danish cyclist Eef Kamerbeek (1934–2008), Dutch decathlete Eef, pen name of Ethan Nicolle (), American comic illustrator and writer
EEF EEF (manufacturers' association), a British manufacturers' organisation Early European Farmers, early Neolithic farmers who brought agriculture to Europe Eastern Economic Forum, an international forum held each year in Vladivostok, Russia Education Endowment Foundation, a British educational charity Egypt Exploration Fund, a British archaeological organization Egyptian Expeditionary Force, a British Empire force in World War I Enterprise environmental factor, a factor that originates from outside of the project or organization Eukaryotic elongation factors European Ecological Federation
See also Eefing, a vocal technique