BBU may refer to:
- Backup battery unit
- BBU (band), American hip hop group
- BBU, IATA airport code for Aurel Vlaicu International Airport near Bucharest, Romania
- Build Bright University (disambiguation), several institutions
- Big Bend University, also known as St. Louis Community College–Meramec
- Barclays Bank (Uganda), a commercial bank in Uganda
BBU is an American hip hop group from Chicago, Illinois, consisting of Jasson Perez, Richard "Epic" Wallace, and Michael "Illekt" Milam. The group's name is an acronym for "Bin Laden Blowin' Up" and "Black, Brown and Ugly".