DBU may refer to:

  • Dansk Boldspil-Union, in English known as the Danish Football Association
  • dBu, a decibel measurement of voltage
  • 1,8-Diazabicycloundec-7-ene
  • Deutsche Bundesstiftung Umwelt, German Federal Environmental Foundation in Osnabrück, Germany
  • Duluth Business University a private university school located in Duluth, Minnesota
  • Dallas Baptist University a Christian liberal arts university located in Dallas, Texas