What does HBU stand for?

Aurora, OR - Location identifier - FAA (FAAL)

Habu - Language code (ETLW)

Historically Black University (SAUO)

Holeton Boat Works - NCIC boat manufacturer code (NCIC)

Hollandsche Bank-Unie - Netherlands

Homebrew Bittering Unit - Brewing (BEBR)

Houston Baptist University - Texas

Hub Bearing Unit

Hydrogen Based Unit

New River, Independence, VA - Manufacturer code for watercraft hull identification number (USCG)