| Acronym | Definition |
|---|
| FAU | Florida Atlantic University |
| FAU | Fonds d'Aménagement Urbain (French: Urban Development Fund) |
| FAU | Faculdade de Arquitetura e Urbanismo (Portuguese: Architecture and Urbanism College) |
| FAU | Friedrich-Alexander-Universität (Erlangen-Nürnberg, Germany) |
| FAU | Film Adapter Unit |
| FAU | Fugitive Apprehension Unit (various locations) |
| FAU | Friends' Ambulance Unit (Quaker run first aid unit) |
| FAU | Formazin Attenuation Unit (water turbidity) |
| FAU | Forced Air Unit |
| FAU | Field Ambulance Unit (various locations) |
| FAU | Flight Attendants Union (Cathay Pacific) |
| FAU | Federación Argentina de Urología (Argentine Urology Association) |
| FAU | Family Assistance Unit (various locations) |
| FAU | Flow Admission Update (LFAP) |
| FAU | Fixed Access Unit |
| FAU | Fetal Assessment Unit |
| FAU | Floating-point Arithmetic Unit |
| FAU | FORSCOM Augmentation Unit |
| FAU | Facial Action Unit |
| FAU | File Allocation Unit |
| FAU | Formerly Assessed Under |
| FAU | Flexible Add/Drop Unit |
| FAU | Fur Affinity United (anthropomorphic convention) |
| FAU | First Article Unit |