FBU
| Acronym | Definition |
|---|---|
| FBU | Fire Brigades Union |
| FBU | Fraternité Blanche Universelle (French: Universal White Brotherhood) |
| FBU | Federal Benefits Unit (Social Security, Medicare) |
| FBU | Fast Binding Update |
| FBU | Fluidized Bed Unit |
| FBU | Franc Burundais (national currency) |
| FBU | Foundry Business Unit |
| FBU | Oslo, Norway - Fornebu (Airport Code) |
| FBU | Faciliteiten Bedrijf Utrecht |