| Acronym | Definition |
|---|
| SAU | St. Ambrose University (Davenport, IA) |
| SAU | Spring Arbor University (Spring Arbor, Michigan) |
| SAU | Southern Arkansas University (Magnolia, Arkansas) |
| SAU | Saudi Arabia (ISO Country code) |
| SAU | School Administrative Unit (New Hampshire school districts) |
| SAU | Sher-e-Bangla Agricultural University (Dhaka, Bangladesh) |
| SAU | Superficie Agricola Utilizzata (Italian: Utilized Agricultural Area) |
| SAU | Separate Administrative Unit (various locations) |
| SAU | Staphylococcus Aureus |
| SAU | surface agricole utile |
| SAU | Software Application Upgrade |
| SAU | Southern Adventist University |
| SAU | Saint Ambrose University (Davenport, IA) |
| SAU | South Asian University |
| SAU | Sindh Agriculture University (Pakistan) |
| SAU | Sakarya University (Turkey) |
| SAU | Standard Advertising Unit (newspapers; publishing) |
| SAU | Societas Archaeologica Upsaliensis (Swedish archaeological commercial trust) |
| SAU | Sociedad Argentina de Urologia |
| SAU | Spatial Analysis Unit (various locations) |
| SAU | State Agricultural University (India) |
| SAU | Sociedad Anónima Unipersonal |
| SAU | Surgical Admissions Unit |
| SAU | Special Assault Unit |
| SAU | Squadron Augment Unit (active reservists augmenting a fleet or training squadron) |
| SAU | Skylines Australia (owners of Nissan Skylines; Australia) |
| SAU | Search Attack Unit |
| SAU | Atlantic Saury (FAO fish species code) |
| SAU | Signal Acquisition Unit |
| SAU | Secure Access Unit |
| SAU | Safety and Arming Unit |
| SAU | Special Assets Unit |
| SAU | Spectrum Analyzer Unit |
| SAU | Shrivenham American University |
| SAU | Service Automation Unit (Service-Oriented Architectures) |
| SAU | Simultaneously Attached Users |
| SAU | Synchronous Attachment Unit |
| SAU | Surface/Search Attack Unit |
| SAU | Sold and Unpaid |
| SAU | Splitter Amplifier Unit |