EKU or Eku may refer to: Businesses and organisations Eastern Kentucky University, Richmond, United States (founded 1906) European Karate Union (now Federation; founded 1966) Evangelical Church of the Union, a German Christian denomination (1953–2004; ) EKU, a German beer brand of Kulmbacher Brewery
Other uses Eku, Delta, a town in Nigeria Earliest known use, of a postage stamp Extended Key Usage, in public key infrastructure Eku Edewor (born 1986), Brirish-Nigerian actress