GBU
GBU stands for:
- Risk assessment
- Global Boxing Union , German boxing association
- Grønlands Boldspil Union , the Greenland Football Association, see Kalaallit Nunaanni Isikkamik Arsaattartut Kattuffiat
- Guided Bomb Unit , a laser-guided bomb, see precision-guided ammunition
gbu stands for:
- Cockatoo (language) (ISO-639-3 code), extinct Australian language in the Northern Territory, Australia
