| Acronym | Definition |
|---|
| NBU➣New Bulgarian University (Sofia, Bulgaria) |
| NBU➣Netbackup (Symantec software) |
| NBU➣Never Been Used |
| NBU➣Nippon Bunri University (Japan) |
| NBU➣Next Billion Users (Google) |
| NBU➣National Bank of Ukraine (Kiev, Ukraine) |
| NBU➣Network Back up |
| NBU➣National Bank of Uzbekistan |
| NBU➣Non-Bargaining Unit (employees) |
| NBU➣North Bengal University (India) |
| NBU➣New Better than Used |
| NBU➣National Biodiversity Unit (Egypt) |
| NBU➣National Business Unit |
| NBU➣Nothing Breaks Us (sports motto) |
| NBU➣Nätverksbaserade Underrättelsetjänsten (Swedish: Network-Based Intelligence) |
| NBU➣No Banana Union |