GBU
GBU is the abbreviation for:
- The IATA code for Chaschm al - Qirba in Sudan
- A housing type for rectifier in electrical engineering
- The German Boxing Association Global Boxing Union
- Global Business Unit, Corporate units of various corporations
- Grønlands Boldspil Union, the Danish name of the Greenland Football Association
- Groupes biblique s Universités, an evangelical student organization in Belgium, part of the International Fellowship of Evangelical Students
- Gruppi Biblici Universitari, an evangelical student organization in Italy, part of the International Fellowship of Evangelical Students
- Guided Bomb Unit, an American -guided bomb with laser or TV control, see, among others, Paveway
- Disambiguation
- Abbreviation