EEF is an acronym and may refer to:
- Engineering Employers Federation, a UK manufacturers' organisation
- European Ecological Federation, a group of European ecological organisations
- European Educational Forum, a joint initiative of seven interuniversitary research schools in computer science.
- European Entrepreneurship Foundation, a foundation fostering entrepreneurship and entrepreneurial culture
- European Equestrian Forum, a federation of 40 countries which support a European influence in the global equestrian sport
- Egyptian Expeditionary Force, a British and Commonwealth force in World War I
- Egypt Exploration Fund, the original name of the Egypt Exploration Society
- Eef is the pseudonym for comic illustrator and writer Ethan Nicolle