BBU
- 2BU (disambiguation)
- Aurel Vlaicu International Airport
- BBU (band)
- BU (disambiguation)
- Backup battery
- Bank of Baroda Uganda Limited
- Beijing Bailie University
- Bennett Bowtell Urquhart
- Bhabua Road railway station
- Bimbo Bakeries USA
- Brookfield Business Partners
- Build Bright University
- GdW Bundesverband deutscher Wohnungs- und Immobilienunternehmen
- General Association of Regular Baptist Churches
- IEEE 1914.1
- Kulung language (Jarawan)
- List of RAF squadron codes
- List of Volkswagen Group petrol engines