Effi

Effi may refer to:


 * Efraim Effi Birnbaum (born 1954), Israeli basketball coach
 * Efraim Effi Eitam (born 1952), Israeli politician and retired brigadier-general
 * Efraim Effi Wizen (born 1956), Israeli computer animator and visual effects specialist
 * Effi Briest, title character of the 1896 novel and various film and television adaptations
 * Effi (C++), an application development framework